PHYSICS EXAM QUESTIONS FOR SS2 SECOND TERM

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SS2 PHYSICS EXAM QUESTIONS SECOND TERM – EDUDELIGHT.COM

SECOND TERM EXAMINATION

PHYSICS SSS 2

TIME ALLOWED: 2hours

CONSTANTS

(Unless otherwise stated, use these constants: c=3×108m/s; g=9.8m/s2, Specific heat capacity of water= 4200Jkg-1K-1, Specific heat capacity of aluminum = 900Jkg-1K-1, Specific heat capacity of copper = 400Jkg-1k-1, specific latent heat of vaporization of water (or steam) = 2260000Jkg-1, specific heat capacity of brass = 380 Jkg-1K-1)

SECTION A: Attempt all question in this section. All question carry equal mark

  1. Which of the following statement(s) is/are correct about heat? I.  Heat is a form of energy II. Heat is affect temperature III. Heat is a fundamental quantity (a) I & II (b) I & III (c) II & III (d) I only     
  2. Which of the following is a wrong unit of temperature? (a) kelvin (b) Fahrenheit (c) Joules (d) Degree Celsius                 
  3. The following statements are not true of the thermometric properties of thermometric liquids except (a) it should be transparent (b) poor conductivity (c) it should be opaque (d) vaporize easily
  4. The electrical resistance of the element in a platinum resistance thermometer at 1000C and 00C are 12.0Ω and 4.0Ω respectively. Calculate the resistance of the thermometer when the temperature is 450C (a) 7.4 Ω (b) 7.6 Ω (c) 3.6 Ω (d) 3.4 Ω                                     
  5. The ice and steam points of a certain thermometer are -200 and 1000 respectively. Calculate the Celsius equivalent of 700 in that thermometer (a) 450C (b) 550C (c) 650C (d) 750C
  6. Which of the following factors will affect the quantity of heat energy in a body (a) the length of the body (b) the nature of the body (c) the volume of the body (d) the density of the body
  7. In an experiment to determine the specific heat capacity of a body, which of the following statement is UNTRUE? (a) use well-lagged calorimeter (b) stir rigorously (c) transfer the hot object quickly (d) it is assumed that no heat is lost to the environment                  
  8. How much heat us needed to raise the temperature of 120g of water through 330C (a) 16.632J (b) 166.32 (c) 1663.2J (d) 16632J
  9. Calculate the time taken to raise the temperature of an aluminum block of mass 700g from 280C to 1080C if the heat source is 1000W (a) 50400s (b) 504s (c) 45.05s (d) 50.4s
  10.  A waterfall is 70m high. Calculate the difference between the temperature of the water at the top and the foot of the waterfall (a) 0.16K (b) 0.17K (c) 0.26K (d) 0.27K                  
  11.  Calculate the quantity of heat require to raise the temperature of 2kg of copper from 300C to 790C (a) 45200J (b) 69200J (c) 29200J (d) 39200J
  12.  An electric heater, rated 15V supplies current of 10A for 6 minutes into a copper block of mass 6kg. Calculate the temperature difference after the specified time (a) 34.8k (b) 22.5K (c) 45.2K (d) 17.7K
  13.  Calculate the specific heat capacity of a substance of mass 1.6×10-4kg. If 48J of heat is required the mass from 280C to 480C (a) 15000Jkg-1k-1 (b) 15000Jkg-1 (c) 15000J (d) 15000Jk-1
  14. Convert 1850F to degree Celsius (a) 850C (b) 750C (c) 1050C (d) 1850C
  15. Absolute zero temperature can be defined as the temperature (a) at which the average kinetic energy of its particles making up the body is zero (b) at which pure water changes to ice at standard atmospheric pressure (c) of zero degree Celsius scale (d) at which pure water and steam co-exist
  16. Mercury has an advantage over othe liquids as thermometric liquids because it (a) has low expansivity (b) has higher conductivity (c) vaporizes easily (d) has relatively low freezing point
  17. An ungraduated thermometer reads 2.0cm and 12.0cm at ice and steam points respectively. Determine the true temperature in kelvin, when the thermometer reads 5.0cm (a) 303.0k (b) 300.0K (c) 278.0 (d) 30.0k
  18. An object is heated from 300c to 570c. The increase in its temperature on the kelvin scale is (a) 17k (b) 27k (c) 81k (d) 300k
  19. Calculate the heat absorbed by 230g of water at 1000c if it was completely vaporized (a) 519800J (b) 9800000J (c) 567000J (d) 366000J
  20. 1kg of ice at 00c was converted to steam at 1000c, what quantity of heat was absorbed? (a) 3.016KJ (b) 30.16KJ (c) 301.6KJ (d) 3016KJ
  21. The temperature at which the pressure of the water is equal to the saturation vapour pressure is called (a) the dew point (b) boiling point (c) condensation point (d) humidity        
  22. The measure of the wetness of the atmosphere is called (a) the dew point (b) boiling point (c) condensation point (d) humidity
  23. Water of mass 120g at 500c is added to 120g of water at 100c and the mixture is well stirred. Calculate the temperature of the mixture (a) 600c (b) 400c (c) 300c (d) 100c
  24. A waterfall is 630m high. What is the change in temperature of a quantity of water that falls from the top of the waterfall? (g=10ms-2) (a) 0.150c (b) 1.500c (c) 15.000c (d) 21.000c
  25. When 30g of water at 300c is mixed with 12g of hot water, the resulting temperature of the mixture is 400c. Calculate the temperature of the hot water assuming no loss of heat to the surroundings (a) 350c (b) 440c (c) 550c (d) 650c
  26. How long will it take to heat 3kg of water from 280c to 880c using an electric kettle, which taps 6A from 210V supply (a) 5.6minutes (b) 9.6minutes (c) 10.0minutes (d) 19.3minutes
  27. The amount of heat given out or absorbed when a substance changes its state without a change in temperature is called (a) latent heat (b) heat capacity (c) specific latent heat (d) specific heat capacity
  28. Calculate the energy required to vaporize 50g of water initially at 800c (a) 113000J (b) 117200J (c) 234400J (d) 420000
  29. Which of the following physical quantity affects the saturated vapour pressure of a liquid? (a) temperature (b) volume (c) mass (d) density
  30. Water in a pressure cooker boils at a temperature higher than 1000c. This is because (a) heat supplied is increased (b) rate of heating reduced (c) cooker maintains a higher pressure (d) cooker is used at high altitude
  31. A hygrometer is an instrument used to measure (a) dew point (b) temperature (c) relative humidity (d) vapour pressure
  32. The phenomenon whereby the water droplets in the atmosphere combine with dust particles in the air reduce visibility is (a) hail (b) cloud (c) fog (d) mist
  33. A gas which obeys gas laws, occupies a volume V cm3 at a pressure of P mmHg at room temperature. If the volume increases to 3V when the temperature and mass of the gas is fixed, calculate the pressure at the new volume (a) 2P (b) 3P (c) P/2 (d) P/3
  34. The volume of a given mass of an ideal gas at 327K and 9.52×104Pa is 40cm3. Calculate the volume of the gas at 273k and 1.034 x104Pa (a) 68.23cm3 (b) 47.91cm3 (c) 44.60cm3 (d) 307.5cm3
  35. The volume and pressure of a given mass of gas at 270C is 1200cm3. Calculate its volume at 1270c if the pressure remains constant (a) 300 cm3 (b) 400 cm3 (c) 1000 cm3 (d) 1600 cm3
  36. The volume and pressure of a given mass of gas at 270C are 76 cm3 and 80cmHg respectively. Calculate its volume at STP (a) 36.2 cm3 (b) 72.8 cm3 (c) 100.0 cm3 (d) 808.9 cm3
  37. A mass of gas at 70c and 70cmHg has a volume of 1200 cm3. Determine its volume at 270c and pressure of 75cmHg of mercury (a) 1200 cm3 (b) 1378 cm3 (c) 4320 cm3 (d) 4629 cm3
  38. When the pressure of a fixed mass of gas is doubled at constant temperature, the volume of the gas is (a) increased four times (b) double (c) unchanged (d) halved
  39. An electromagnetic radiation has a speed of 3×108m/s and a frequency of 106Hz, calculate its wavelength (a) 3.3×103m (b) 3.0 x102m (c) 3.0 x10-2m (d) 3.3 x10-3m
  40. A body oscillates in simple harmonic motion according to the equation  where x is expressed in metres. What does 0.01 represents (a) velocity (b) frequency (c) period (d) amplitude
  41. Compressions and rarefactions are terms associated with (a) transverse waves (b) electromagnetic waves (c) longitudinal waves (d) water waves
  42. Which of the following properties explains the change in direction of the waves (a) diffraction (b) reflection (c) refraction (d) interference
  43. A wave represented by the equation y=0.5sin0.4π(x-60t) where the distance (x) is measured in centimeters and time (t) in seconds. What is the wavelength of the wave? (a) 0.2cm (b) 0.4cm (c) 0.8cm (d) 5.0cm
  44. If two waves of equal frequency and amplitude travel in the opposite directions along a string, the wave set up in the string is called (a) transverse (b) progressive (c) longitudinal (d) stationary
  45. The amplitude of a wave is the (a) distance between two successive trough of the wave (b) separation between adjacent particles (c) maximum displacement of the wave particle from the equilibrium displacement (d) distance travelled by a wave in a complete cycle of its motion
  46. Which of the following is/are common to all waves? I. diffraction II. Refraction III. Interference (a) I only (b) III only (c) I and III only (d) I, II and III
  47. Virtual image is one (a) formed by the intersection of actual rays (b) which is not visible to the eye (c) through which the rays of light do not pass (d) which can be formed on the screen
  48. A ray of light strikes a plane mirror normally. If the mirror is rotated through an angle of 200, what is the angle through which the reflected ray rotates? (a) 100 (b) 200 (c) 400 (d) 600
  49. A man 1.74m tall stands 3m in front of a mirror 1m long. What is the size if his image? (a) 5,22m (b) 1.74m (c) 0.74m (d) 0.58m
  50. An object is placed 30cm in front of a concave mirror of focal length 20cm. Calculate the distance between the object and image (a) 60cm (b) 40cm (c)30cm (d) 20cm

SS2 PHYSICS EXAM QUESTIONS SECOND TERM – EDUDELIGHT.COM

SECTION B: Attempt any three questions from this section.

SECTION B: Attempt any three questions from this section.

1.            Define the upper fixed point and lower fixed  point as used in thermometers               2marks

(b) The electrical resistance of the element in a platinum resistance thermometer at 1000C, 00C and room temperature are 75.000Ω, 63.000Ω and 64.992Ω respectively. Use the data to determine the room temperature.        3marks

(c) State Charles law      2marks

(d) Calculate the volume of a given mass of gas when its pressure changes from 900cmHg to 650cm at initial volume of 25cm3, at a constant temperature    3marks

2.            (a) Define the following terms (include the unit) as used in waves (i) Period (ii) Wavelength                                                                                                                        4marks

(b) A heating coil of resistance 20Ωconnected to a 220v source is used to boil a certain quantity of water in a container of heat capacity 100Jkg-1 for 20 minutes. If the initial temperature of the water is 400C, calculate the mass of the water in the container (assume boiling point if water is 1000C) 4marks

(c) Define the boiling point of a liquid                                          2marks

3.            (a) What is meant by the statement “the specific heat capacity of water is 4200JKg-1k-1”             2marks

(b) State two precautions to be taken when performing an experiment to determine the specific heat capacity if a material                                               2marks

(c) The volume of air inside a pump at 300C is 100cm3, when the pressure is 760mmHg. When the air is compressed to 25 cm3, the temperature increases to 450C. Find the new pressure of the air                                                 4marks

(d) What is a wave?                                                                                             2marks

4.            (a) List and explain any two properties of wave                                 5marks

(b) Explain the diffusion of light                                                                                 2marks

(c) An object is placed 15cm inn front of a concave mirror of focal length 20cm, using a suitable diagram of any convenient scale, state the nature of the image formed                                                                                                                                3marks

5.            (a) A brass block of mass 280g at a temperature of 5000C is dropped into a vessel of negligible heat capacity containing heat capacity containing 300g of water at 800C; find the mass of the water that will boil away                5marks

(b) Give three differences between boiling and evaporation       3marks

(c)           When your physics teacher of height 1.82m decides to stand 4m in the front of a concave mirror, describe the nature of the image formed    2marks

SS2 PHYSICS EXAM QUESTIONS SECOND TERM – EDUDELIGHT.COM

SECOND TERM EXAM SS 11

Read Also

1.                            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

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

3.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

4.            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

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

(a)600   (b) 300  (c) 450 (d) 750

6.            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

7.            The derived unit of pressure can be expressed as

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

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

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

9.            Which of the following substances is the most volatile at room temperature? (a)Water  (b) diesel                (c)petrol              (d) kerosene

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

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

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

12.          The tendency for stationery body to continue to remain at rest when a force is applied to it is known as Friction

(a) Impulse         (b) inertia            (c) momentum (d)

13.          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

14.          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

15.          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

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

17.          The device that converts mechanical energy into electrical energy is       

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

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

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

(c) Charges particles vibrate at right angle             (d) No transfer of material is involved

19.          An electric motors converts

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

(c) mechanical energy to sound energy (d)Electrical energy to thermal energy

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

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

(c)Velocity (d) Acceleration.

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

(c) Temperature               (d) weight

23.          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)

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

24.          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

25.          Resolve a force of 100N inclined at 500 to the horizontal, calculate the horizontal components.

(a) 62.28N           (b) 60.28N           (c) 70.00N            (d) 28.60N

26.A       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)            I = velocity, II = Displacement, (III) momentum

(a)          I only     (b)  II only            (c)   I  and II only               (d) III only

27. A body which is uniformly retarded comes to rest in 10s after traveling a distance of 20m calculate its initial velocity:

(a) 0.5m5-1  (b) 2.0m5-1                (c) 20.0m5-1 (d) 200.0m5-1

28. 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/

(a) 1.05  (b) 2.05                (c) 3.05 (d) 0.55

29.          Calculate the height from which a body is released from rest if its velocity just before hitting the ground is 30m5-1

30.          Calculate the height from which a body is released from rest if its velocity just before hitting the ground is 30m5-1

31           Is the time required for a projectile to return to the same level

from which it was projected?

(a)          Maximum height             (b)          time of flight (c) Range  (d) None of the above

32.          The formula for range is …………………………………..

(a)          R= u2 sin 2 0       (b) R = u2 sin2 0 (c)           R = 2u sin 0 (d) R = 1\2gT2  g                        2g                                           g

33. 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

34           is the highest vertical distance attained as measured from the

horizontal projection plane? (a) Time of flight     (b) maximum height

(c) range  (d)      time of motion

35           Is single force which acting alone will have the same effect in

magnitude and direction as two or more forces acting together?

(a)          Resultant             (b)  force             (c) moment        (d) opposition

36.          The 5.1 unit of the moment of a force is ;

(a)          Kgm       (b)  Nm (c)  Nm-1             (d)          Jm

37           Is the body is either not rotating at all or in rotating at a

constant angular velocity.

(a)          Equilibrium         (b)  Dynamic       (c)           Rotation               (d)resultant

38.          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.

(a) 32kg                (b) 0.32kg            (c0  45kg               (d) 5kg

39.          ………………………. Is the velocity decrease by equal amount in equal times

(a)                          Uniform velocity              (b) acceleration (c) uniform acceleration (d) speed

40           Is the time required for a projectile to return to the same level

from which it was projected?

(b)          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

SS2 PHYSICS EXAM QUESTIONS SECOND TERM – EDUDELIGHT.COM

13 minutes read

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