PHYSICS EXAM QUESTIONS FOR SS2 THIRD TERM

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SS2 PHYSICS EXAM QUESTIONS THIRD TERM – EDUDELIGHT.COM

THIRD TERM EXAMINATION

Examination malpractices may lead to a repeat of the subject or suspensions don’t be involved.

SUBJECT: PHYSICS

CLASS: SS 2

DURATION ; 2HRS

SECTION A

INSTRUCTION: Attempt all question in this section.

A transparent rectangular block 3.0cm thick is placed on the letter ‘A’ written on a white cardboard. When the letter was viewed from the top of the glass block, it appeared to be 2cm. calculate the refractive index of the block (a) 3/2 (b) 5/3 (c) 1/2 (d) 3/2
The velocities of light in air and glass are 3.0 x10⁸ m/s and 1.8 x10⁸ m/s respectively. Calculate the sine of the angle of incidence that will produce an angle of refraction of 30⁰ for a ray of light incident on glass A 1.2 B 1.0 C 0.8 D 0.6
The horizontal floor of a water reservoir appears to be 1.0m deep when viewed vertically from above. If the refractive index of water is 1.35, calculate the real depth of the reservoir (a) 2.35m (b) 1.35m (c) 1.00m (d) 0.35m
A beam of light travelling through air at 3.0×10⁸m/s enters a pool of water of refractive index 4/3, what is its speed as it travels through water (a) 2.25×10⁸ms^-1 (b) 3.25×10⁸ms^-1 (c) 4.25×10⁸ms^-1 (d) 5.25×10⁸ms^-1

Use the information below to answer questions 5, 6 and 7

The angle of incidence of a narrow beam of light on a side of an equilateral triangular prism is 48⁰. Calculate the:

Angle of minimum deviation (a) 36⁰ (b) 30⁰(c) 45⁰ (d) 60⁰
Angle of refraction (a) 36⁰ (b) 30⁰(c) 45⁰ (d) 60⁰
Refractive index of the material of the prism (a) 1.50 (b) 1.26 (c) 0.55 (d) 2.0
A ray of light is incident normally on an air-glass interface. What is its angle of refraction? (a) 90⁰ (b) 60⁰ (c) 30⁰ (d) 0⁰
The image formed by a converging lens is 3 times as tall as the object. If the focal length of the lens is 12cm, calculate the distance of the image from the object (a) 16cm (b) 48cm(c) 32cm (d) 64cm
Which of the following correctly describe the image formed by a diverging lens? (a) Diminished, erect and virtual (b) Diminished, inverted and real (c) Magnified, erect and virtual (d) Magnified, inverted and real
The image formed on the retina of a human eye is (a) virtual and diminished (b) real and inverted (c) erect and real (d) inverted and virtual
Long sight is corrected by one of the following (a) diverging lens (b) bi-concave lens (c) bi-convex lens (d) converging lens
A white screen illuminated by red and green light appears (a) red (b) green (c) purple (d) yellow
Which of the following instruments makes use of the principle of total internal reflection? (a) sextants (b) periscope (c) microscope (d) telescope
The distance between optical centre and twice the principal focus of a lens is called……. (a) Optical centre (b) focal length (c) principal axis (d) radius of curvature
A pin 6cm high is placed in frontof a diverging lens of focal length 15cm. calculate the position of the image formed (a) -15cm (b) 15cm (c) -10cm (d) 10cm
Calculate the power of a converging lens with a focal length of 5cm (a) +0.0D (b) +0.2D(c) -20.0 (d) -0.2D
An object is placed 20cm from a converging lens. If the real image formed is 80cm. Find the focal length of the lens? (a)15cm (b) 30cm (c) 10cm (d) 16cm
Inability of the eye to focus near objects is known as: (a) astigmatism (b) hypermetropia (c) myopia (d) presbyopia
An object placed 15cm from a converging lens from a real image whose magnification is 2.0. What is the focal length of the lens? (a) 10.0cm (b) 6.00cm (c) 5.00cm (d) 1.50cm
A converging lens produces an image four times as large as an object placed 25cm from the lens. Calculate its focal length (a) 100cm (b) 33cm (c) 29cm (d) 20cm
A convex lens of focal length 15cm forms a real image 45cm from the lens. Find the magnification of the image (a) 1 (b) 2 (c) 3 (d) 4
For correcting long sight defects in the human eyes, we require ……….. (a) Converging lens (b) diverging lens (c) microscope (d) periscope
A magnified and virtual image of a near object is produced by (a) prism binocular (b) astronomical telescope (c) periscope (d) simple periscope
When an astronomical telescope is in normal adjustment, the focal length of the objective lens is 50cm and that of the eye piece is 5.0cm. What is the distance between the lenses (a) 10.0cm (b) 30.0cm (c) 45.0cm (d) 55.0cm
Which of the following optical instruments does not make use of a lens? (a) projector (b) periscope (c) eye (d) microscope
The ability of the eye to focus object at different distances is called …….. (a) Power (b) accommodations (c) normal vision (d) long sight
What part of the camera corresponds to the iris of the eye? (a) diaphragm (b) film (c) lens (d) shutter
Binocular vision (a) Restricts the field of view (b) Enables a person to see further (c) Enables objects to be seen in relief (d) Enables objects to be seen clearly
Which of the following colours of light is most deviated when light passes through a triangular prism? (a) orange (b) green(c) indigo (d) yellow
Which of the following pairs of light rays shows the widest separation in the spectrum of white light? (a) green and blue (b) orange and indigo(c) blue and violet (d) red and yellow
The direction of a light ray changes as it passes from one medium to another. The phenomenon is called (a) diffraction (b) reflection (c) dispersion (d) refraction
The separation of white light into its constituent colour is known as (a) deviation (b)diffraction (c) dispersion (d) deflection
Another name for light of one wavelength or colour (a) dispersed light (b) hight light (c) monochromatic light (d) transparent light
The following colours are primary colours except? (a)red (b) green (c)blue (d) yellow
When white light passes through a triangular prism, there is dispersion because of (a) diffraction of light (b) polarization of light(c) the difference in speed of the components of light(d) the interference of light waves in glass
The frequency of a stretched string has a fundamental note produced given by the relation: (a) (b)

A boy standing some distance from the foot of a tall cliff claps his hands and hears an echo 0.5s later. If the speed of sound in air is 340m/s, how far is he from the cliff? (a) 17m (b) 24m (c) 85m (d) 170m
Sound wave differs from water wave………(a) energy transfer is involve (b) they can be refracted and reflected (c) no transfer of the medium is involved (d)They are longitudinal wave
The periodic rise and fall in amplitude or loudness of the sound produced when two notes of nearly equal frequencies are sounded together is called (a) loudness (b) pitch (c) beat (d) note
The characteristics note which helps to identify sound from different musical instruments is called (a) quality (b) loudness(c) beat (d) overtones
A noise of frequency 2000Hz has a velocity of 400m/s. What is the wavelength of the noise? (a) 0.02m (b) 0.25m (c) 0.2m (d) 2m
A man stands 50m in front of a cliff and claps his hands and the echo is heard 0.3seconds later. Calculate the speed of sound in air in metre per seconds (a) 333 (b) 330(c) 233 (d) 220
A source of sound produces waves in air if wavelength 1.65m. If the speed of sound in air is 330m/s, the period of vibration is (a) 200 (b) 0.005 (c) 0.5 (D) 0.02
The speed of sound traveling in various media increases in the following correct order (a) iron bar, air, water (b) air, iron bar, water (c) air, water, iron bar (d) water, iron bar, air
In stringed instruments like a guitar or violin, high pitched notes are produced by strings that are (a) thick and short (b) thin and short (c) thick and long (d) thin and long
Calculate the frequency of fundamental of a closed pipe of length 20cm, if the speed of sound waves in air is 340 m/s (a) 40Hz (b) 200Hz (c) 350Hz (d) 425Hz
A tuning fork sounds louder when its stem is pressed against a table top than when held in air because (a) a larger mass of air is set vibrating by the table top (b) the whole table vibrates in resonance (c) the whole table has acquire a larger frequency (d) the fork and the table have the same frequency
What type of motion does the skin of a talking drum perform when it is being struck with drumstick? (a) random (b) rotational (c) vibratory (d) translational
Calculate the wavelength of a note which is one octave lower than a note of 256 Hz in a medium in which the speed of sound is 352m/s (a) 0.69m (b) 1.38m (c) 2.75m (d) 5.50m

SS2 PHYSICS EXAM QUESTIONS THIRD TERM – EDUDELIGHT.COM

SECTION B

INSTRUCTION: Attempt any five questions from this section. Each question carries 2 marks

State Snell’s laws of refraction of light
Draw the ray diagram of an object placed (i) at F for a converging lens
What is meant by the statement that “the focal length if a converging lens is 20cm”
A stone of mass 2.0kg is thrown vertically upwards with a velocity of 20.0m/s, calculate the initial kinetic energy
State the newton’s second law of motion
Mention two applications of projectiles
Two forces A and B acts at 60⁰ to each other. Calculate the resultant force R in terms of A and B
Weights 20N and 60N are hung on the points 0.1m and 1.3m respectively on a light beam of length 1.5m. If the balance point is at 1.0m, find the moment of the forces about the balanced point
Define these terms as applicable in simple harmonic motion: (i) amplitude (ii) period
Define specific heat capacity and give the S.I unit?

SECTION C

INSTRUCTION: Attempt any three questions from this section.

(a) A ray experiences minimum deviation 40⁰ when passing symmetrically through an equilateral glass prism. Calculate the angle of incidence of the ray (refractive index of glass = 1.5) 5marks

(b) Describe with the aid of a well labeled diagram how a pure spectrum of white light can be produced? 3marks

(a) Explain the following terms: (i) echo (ii) reverberation (iii) resonance 6marsks

(b) An underwater swimmer is at a depth of 12cm below the surface of water. A bird is at a height of 18cm from the surface of water, directly above his eyes. For the swimmer, the bird appears to be at a distance X from the surface of the water. What is the value of X if the refractive index of water is 4/3 4 marks

(a) A convex lens placed 8cm from an object forms a virtual image 24cm from the lens. What is: (i) the focal length of the lens (ii) the distance between the object and the lens for which a real image is form 6marks

(b) Distinguish between noise and musical note 2marks

(c) A sound frequency 100Hz and wavelength 3.34m is travelling through air, calculate the velocity of sound in air 2marks

(a) A ship approaches a cliff, its siren is sounded again and the echo is heard in the ship after 12 seconds, 2.1 minutes later the siren was sounded again and the echo was heard 8 seconds later. If the speed of sound in air is 340m/s, calculate the velocity at which the ship was approaching the cliff 5marks

(b) List three classes of musical instruments giving one example in each 3marks

(a) Distinguish between a real and a virtual image and draw ray diagrams to illustrate how a converging lens can be used to produce each type of image 3marks

(b) An object placed at a distance u from a converging lens produces a virtual image 33cm from the object. If the magnification is 4, calculate the: (i) value of u (ii) focal length of the lens (iii) power of the lens 7marks

SS2 PHYSICS EXAM QUESTIONS THIRD TERM – EDUDELIGHT.COM

THIRD TERM EXAMINATION

CLASS: S S 2

SUBJECT: PHYSICS

Which of the following is not a vector quantities? (a) Speed (b) force

(c)Velocity (d) Acceleration.

Which of the following is not a scalar quantity? (a)Density (b) speed

Two force, whose resultant is 100N, are perpendicular to each other. If one them makes me an angle of 60⁰ with the resultant, calculate its imagination

Calculate its magnitude.

(Sin 60⁰ =0.8660, cos 60⁰= 0.5000)

200.0 N (b) 173.2N (c)115.5N (d) 86.6N
- Find by drawing and by calculating the resultant of two vector 3units and 4units inclined to each other at (a) 30⁰ (b) 90⁰ (c) 120⁰ (d)75⁰
- Resolve a force of 100N inclined at 50⁰ to the horizontal, calculate the horizontal components.
62.28N (b) 60.28N (c) 70.00N (d) 28.60N

A body starts from rest and moves with constant acceleration. Which of the following quantities varies / vary linearly with the square of the line?
I = velocity, II = Displacement, (III) momentum
I only (b) II only (c) I and II only (d) III only
- A body which is uniformly retarded comes to rest in 10s after traveling a distance of 20m calculate its initial velocity:
0.5m5^-1 (b) 2.0m5^-1 (c) 20.0m5^-1 (d) 200.0m5^-1
- A mango fruit drops to the ground from the top of its tree which is 5m high. How long does it take to reach the ground/
1.05 (b) 2.05 (c) 3.05 (d) 0.55
- Calculate the height from which a body is released from rest if its velocity just before hitting the ground is 30m5^-1
- Calculate the height from which a body is released from rest if its velocity just before hitting the ground is 30m5^-1
- ……………………………. Is the time required for a projectile to return to the same level from which it was projected?
Maximum height (b) time of flight (c) Range (d) None of the above
- The formula for range is …………………………………..
R= u² sin 2 0 (b) R = u² sin2 0 (c) R = 2u sin 0 (d) R = 1\2gT²

g 2g g

A ball is projected horizontally from the top of a hill with a velocity of 30m5-1. If it reaches the ground 5 seconds letter. The height of the hill is

(a) 20m (b) 125m (c) 250m (d) 65m

……………………… is the highest vertical distance attained as measured from the horizontal projection plane? (a) Time of flight (b) maximum height

……………………………. Is single force which acting alone will have the same effect in magnitude and direction as two or more forces acting together?
Resultant (b) force (c) moment (d) opposition

The 5.1 unit of the moment of a force is ;
Kgm (b) Nm (c) Nm^-1 (d) Jm
1. ………………………………. Is the body is either not rotating at all or in rotating at a constant angular velocity.
Equilibrium (b) Dynamic (c) Rotation (d)resultant
1. A uniform meter rule balances on a knife edges at 55cm mark when a mass of 40g is hung from 95cm mark find the weight of the ruler.
32kg (b) 0.32kg (c0 45kg (d) 5kg
1. ………………………. Is the velocity decrease by equal amount in equal times
Uniform velocity (b) acceleration (c) uniform acceleration (d) speed

20. ____________ is the heat supplied or remove which causes a change of style without a change in temperature (a) Latent heat (b) Vaporization (c) Heat of fusion (d) specific heat

21. _____________ is a process where a liquid turn spontaneously into vapour below its boiling point

22.A stationery bell is hit by an average force 50N for a time of 0,03 sec. what is the impulse experienced by the body ?

(a) 15N/s (b)m1.5N/s (c) 1.25 N/s (d) 2.5N /s

224. A meter rule is pivoted at its midpoint C with a verticel force of 10N hanging from the distance 30cm from C . at what distance must a 15N force hang to balance the ruler horizontally?

(a) 30cm (b) 2.0cm (c) 20cm (d) 25cm

25.For a projectile the maximum range is obtained when the angle of projection is _____

(a)60⁰ (b) 30⁰ (c) 45⁰ (d) 75⁰

26. A ball is released from a height above the ground. find its velocity after 5 seconds take g as 10m5^-2

(a)20m (b) 5m (c) 50cm (d)60m

27. The derived unit of pressure can be expressed as

(a) kgm^-15^-1(b) kgm5²(c) kgm^-25^-2(d)kgm^-15^-2

28. Which of the following devices is used to determine the relative intensive of an acid

(a) manometer (b) hydrometer (c) hypsometer (d) hygrometer

29. Which of the following substances is the most volatile at room temperature?

(a)Water (b) diesel (c)petrol (d) kerosene

30. The movement of fluid up or down a narrow tube is _______

(a) Brownian motion (b) capillarity (c) diffusion (d) Osmosis

31. The 5/1 unit of heat is ______ (a) Joule (b) Kelvin (c) Watt (d) ampere

32. The tendency for stationery body to continue to remain at rest when a force is applied to

it is known as _____________ (a) Impulse (b) inertia (c) momentum (d) Friction

33. When a body is slightly tilted. it is found that its centre of gravity is slightly raised , what is the state of equilibrium of the body (a) Unstable (b) Neutral (c) cannot be determined

34. A balling through a viscous liquid is acted upon by

(a) up thrust only (b) up thrust and the ball’s weight (c) The ball’s weight and viscous force

(d)up thrust , the ball’s weight and viscous force

35. Alcohol of mass 21g and density 0.7gcm^-3 is mixed with log of water . determine the density of the mixture { Density of water = 1.0cm^-3} (a) 0.775gcm^-3(b) 0.780gcm^-3 (c) 0.875gcm^-3

(d) 0.880gcm^-3

36. The s.1 unit of power is ____________ (a) N (b) pa (c) W (d) j

37. The device that converts mechanical energy into electrical energy is _________

(a) Dynamo (b) An electric motor (c) An induction coil (d) A transformer

38. Heat transfer by conduction is similar to wave motion because

(a) There is increase in temperature (b) Transfer of materials is involved

39. An electric motors converts

(a) Electrical energy to mechanical energy (b) Mechanical energy to electrical energy

40. Which of the following units is derived (a) kg (b) M (c) K (d) N

41. Which of the following is not a vector quantity? (a) Speed (b) force

(c)Velocity (d) Acceleration.

Which of the following is not a scalar quantity? (a)Density (b) speed

Two force, whose resultant is 100N, are perpendicular to each other. If one them makes me an angle of 60⁰ with the resultant, calculate its imagination

Calculate its magnitude.

(Sin 60⁰ =0.8660, cos 60⁰= 0.5000)

200.0 N (b) 173.2N (c)115.5N (d) 86.6N

Find by drawing and by calculating the resultant of two vector 3units and 4units inclined to each other at (a) 30⁰ (b) 90⁰ (c) 120⁰ (d)75⁰
Resolve a force of 100N inclined at 50⁰ to the horizontal, calculate the horizontal components.
62.28N (b) 60.28N (c) 70.00N (d) 28.60N

A body starts from rest and moves with constant acceleration. Which of the following quantities varies / vary linearly with the square of the line?
I = velocity, II = Displacement, (III) momentum
I only (b) II only (c) I and II only (d) III only
A body which is uniformly retarded comes to rest in 10s after traveling a distance of 20m calculate its initial velocity:
0.5m5^-1 (b) 2.0m5^-1 (c) 20.0m5^-1 (d) 200.0m5^-1
A mango fruit drops to the ground from the top of its tree which is 5m high. How long does it take to reach the ground/
1.05 (b) 2.05 (c) 3.05 (d) 0.55

Calculate the height from which a body is released from rest if its velocity just before hitting the ground is 30m5^-1
Calculate the height from which a body is released from rest if its velocity just before hitting the ground is 30m5^-1
……………………………. Is the time required for a projectile to return to the same level from which it was projected?
Maximum height (b) time of flight (c) Range (d) None of the above
The formula for range is …………………………………..
R= u² sin 2 0 (b) R = u² sin2 0 (c) R = 2u sin 0 (d) R = 1\2gT²

g 2g g

A ball is projected horizontally from the top of a hill with a velocity of 30m5-1. If it reaches the ground 5 seconds letter. The height of the hill is

(a) 20m (b) 125m (c) 250m (d) 65m

……………………… is the highest vertical distance attained as measured from the horizontal projection plane? (a) Time of flight (b) maximum height

……………………………. Is single force which acting alone will have the same effect in magnitude and direction as two or more forces acting together?
Resultant (b) force (c) moment (d) opposition
The 5.1 unit of the moment of a force is ;
Kgm (b) Nm (c) Nm^-1 (d) Jm
………………………………. Is the body is either not rotating at all or in rotating at a constant angular velocity.
Equilibrium (b) Dynamic (c) Rotation (d)resultant
A uniform meter rule balances on a knife edges at 55cm mark when a mass of 40g is hung from 95cm mark find the weight of the ruler.
32kg (b) 0.32kg (c0 45kg (d) 5kg
………………………. Is the velocity decrease by equal amount in equal times
Uniform velocity (b) acceleration (c) uniform acceleration (d) speed
……………………………. Is the time required for a projectile to return to the same level from which it was projected?
Maximum height (b) time of flight (c) Range (d) None of the above

THEORY

1. Define latent heat of vapourization

2. Define specific heat capacity

3. What is moment

4. a body of mass 3.0kg moves with a velocity of 10ml5^-1

5. State the application of expansion

6. State three (3) heat transfer

THEORY

1 (A) Define vector quantities and scarlar quantities

(b) Give 3 examples of vector and scarlar quantities

2. State the law of parallelogram

3. Find by drawing and by calculation in the resultant of two vectors 3unit and 4units incline to each other

4. State the three equation of motion

5. A car accelerates uniformly at a rate of 10m5^-2 from an initial velocity of 36kmhr^-1 for 3 seconds find the distance covered during this period.

6. A body moving with a initial velocity of 30m5^-1 accelerates uniformly at a rate of 105m^-2until it attains a velocity of 50m5^-1 . What is the distance covered during this period.

7. A projectile is fired with initial velocity of 100m\5^-1 at an angle of 30⁰ with the horizontal calculate (i) the time of flight

(ii) The maximum height attained

(iii) The range

8. Define the following (a) Time of flight

(b) Maximum height

SS2 PHYSICS EXAM QUESTIONS THIRD TERM – EDUDELIGHT.COM

15 minutes read