Physics Exams Questions Second Term SS 1

Class: SSS 1

Subject: Physics

Name:

Section A: Objective Questions

Instructions: Read each question carefully and choose the correct option from the choices lettered a – d.

1. Which of the following is not an effect of heat? a. Expansion b. Contraction c. Change of state d. Increase in weight
2. Temperature can be measured in the following units except: a. Degree Celsius b. Kelvin c. Degree Fahrenheit d. Centigrade-meter
3. When heat is extracted from water and it changes from liquid to gas, what is this process called? a. Condensation b. Evaporation c. Sublimation d. Freezing
4. The process by which a gas is converted to a solid is called: a. Condensation b. Evaporation c. Sublimation d. Freezing
5. Fahrenheit is a unit of: a. Heat b. Temperature c. Freezing d. Melting
6. Gaps are left in the construction of railway tracks to allow for: a. Contraction b. Evaporation c. Expansion d. Vaporization
7. When hot water is poured into a glass tumbler, it might crack due to the ______ of the inner walls of the tumbler. a. Even expansion b. Uneven expansion c. Uneven contraction d. Even contraction
8. The stopper of a bottle can be removed due to the ______ of the glass. a. Contraction b. Expansion c. Evaporation d. None of the above
9. Which of the following is NOT an advantage of the thermal expansion of solids? a. Bimetallic thermometer b. Fire alarm c. Sagging of overhead wire d. Fitting of wheels in rims
10. If heat is removed from solids, they: a. Contract b. Evaporate c. Expand d. None of the above
11. The clinical thermometer is characterized by having a: a. Wide range of temperature b. Wide bore c. Long stem d. Constriction
12. A short response time in a liquid-in-glass thermometer is obtained when: a. The bulb is large and thick-walled b. The bulb is small and thin-walled c. The stem is long and thin d. The bulb is thin-walled and the liquid is a good conductor of heat
13. Change in volume with temperature is the physical property of which type of thermometer? a. Constant volume gas b. Liquid-in-glass c. Resistance d. Thermoelectric
14. Convert 27°C to Kelvin. a. 29 K b. 30 K c. 300 K d. 31 K
15. Which of the following is NOT a unit of temperature? a. Kelvin b. Degree Celsius c. Ampere d. Fahrenheit
16. The anomalous expansion of water occurs between/at: a. 1°C and 4°C b. 0°C and 4°C c. 4°C and 25°C d. All temperatures
17. The SI unit of linear expansivity is: a. Per Celsius b. Per Fahrenheit c. Per Kelvin d. Per Joules
18. If the linear expansivity of a solid is 1.8 × 10^-6 K^-1, what is the area expansivity? a. 0.9 × 10^-6 b. 3.6 × 10^-6 c. 1.8 × 10^-6 d. 5.4 × 10^-6
19. A metal with a length of 15.01 m is heated until its temperature rises by 60°C. If its new length is 15.05 m, calculate its linear expansivity. a. 0.0004/K b. 0.00004/K c. 0.004/K d. 0.04/K

20. The increase in volume of 10 cm³ of mercury when the temperature rises by 100°C is 0.182 cm³. What is the cubic expansivity of mercury? a. 0.000182/K b. 0.0000182/K c. 0.0182/K d. 0.182/K
21. The Celsius temperature scale is defined by the freezing point of water at: a. 0°C b. 100°C c. 32°F d. 273 K
22. A solid with a linear expansivity of 2 × 10^-6 K^-1 is heated. If its original length is 100 cm and the temperature increases by 50°C, what will be the change in length? a. 0.01 cm b. 0.1 cm c. 1 cm d. 2 cm
23. Which of the following is a type of thermometer? a. Barometer b. Voltmeter c. Liquid-in-glass thermometer d. Anemometer
24. What happens to water when it is heated from 0°C to 4°C? a. It remains the same volume b. It expands c. It contracts d. It turns into vapor
25. If a bimetallic strip is heated, one side will expand more than the other due to: a. Different densities b. Different thermal conductivities c. Different thermal expansion coefficients d. Different specific heat capacities
26. Which type of thermometer is commonly used in weather stations? a. Thermocouple thermometer b. Constant volume gas thermometer c. Liquid-in-glass thermometer d. Resistance thermometer
27. The boiling point of water on the Kelvin scale is: a. 100 K b. 273 K c. 373 K d. 373°F
28. The change of state from solid directly to gas without passing through the liquid state is called: a. Sublimation b. Condensation c. Evaporation d. Freezing
29. What is the name of the device used to measure atmospheric pressure? a. Thermometer b. Barometer c. Anemometer d. Hygrometer
30. The volume of a gas at constant pressure is directly proportional to its: a. Temperature in Celsius b. Temperature in Kelvin c. Pressure in Pascal d. Density in kg/m³
31. If 20 megajoules of work is done to move a charge of 5 microcoulombs between two points, the potential difference between the points is: a. 2,000 V b. 4,000 V c. 10,000 V d. 15,000 V
32. Mechanical energy can be converted to electrical energy using: a. A light bulb b. An electric motor c. A generator d. A resistor
33. A magnetic field is defined as a region around a: a. Magnetic material b. Charged particle c. Conductor d. Insulator
34. A gravitational field is a region of space surrounding a: a. Light source b. Planet or star c. Wire d. Charged particle
35. Acceleration due to gravity is highest at the: a. Equator b. Poles c. Tropics d. Oceans
36. In physics, a field is a region in which a: a. Particle is stationary b. Physical quantity changes c. Light wave travels d. Sound wave travels
37. Three types of fields in physics include: a. Gravity, magnetism, electricity b. Heat, sound, light c. Temperature, pressure, humidity d. Friction, mass, volume
38. An electric generator converts: a. Heat to electricity b. Mechanical energy to electricity c. Light to electricity d. Sound to electricity
39. When a wire is moved through a magnetic field, it experiences: a. Electric resistance b. Electric potential c. An induced current d. Electromagnetic radiation
40. The unit of electric field strength is: a. Newton b. Volt c. Ampere d. Volt per meter
41. A generator produces electricity by: a. Heating a conductor b. Moving a coil through a magnetic field c. Compressing air d. Cooling water
42. In simple terms, potential difference is the: a. Difference in energy between two points b. Speed of light in a vacuum c. Resistance of a wire d. Force applied to a mass
43. A charged particle in an electric field experiences a: a. Force b. Change in mass c. Change in charge d. Temperature rise
44. The relationship between force and electric field for a charge is: a. F = q / E b. F = E / q c. F = qE d. F = q + E
45. Change in volume with temperature is the physical property of a __________ thermometer. A. constant volume gas B. liquid-in-glass C. resistant D. thermoelectric
46. Convert 27°C to Kelvin: A. 290K B. 300K C. 30°C D. 310K
47. The following are units of temperature, except: A. Kelvin B. degree Celsius C. ampere D. Fahrenheit
48. When hot water is poured into a glass tumbler, it might crack due to the __________ of the inner walls of the tumbler. A. even expansion B. uneven expansion C. uneven contraction D. even contraction
49. The stopper of a bottle can be removed due to the __________ of the glass. A. contraction B. expansion C. evaporation D. none of the above
50. The following are advantages of thermal expansion of solids, except: A. bimetallic thermometer B. fire alarm C. sagging of overhead wire D. fitting of wheels in rims
51. The anomalous expansion of water takes place between: A. 1°C and 4°C B. 0°C and 4°C C. 4°C and 25°C D. all temperatures
52. The SI unit of linear expansivity is: A. per Celsius B. per Fahrenheit C. per Kelvin D. per Joule
53. If the linear expansivity of a solid is 1.8×10−6 K−11.8×10−6K−1, the area expansivity will be: A. 0.9×10−60.9×10−6 B. 3.6×10−63.6×10−6 C. 1.8×10−61.8×10−6 D. 5.4×10−65.4×10−6
54. The following are good conductors of heat, except: A. steel B. aluminum C. copper D. wool
55. The thermal conductivity of copper is greater than lead. A. true B. false C. cannot say D. none of the above
56. A stone floor feels cold to the feet, but a rug or carpet on the same floor feels warm. A. true B. false C. cannot say D. none of the above
57. The ebonite rod in question 2 becomes: A. positively charged B. negatively charged C. neutral D. none of the above
58. Like charges: A. attract B. repel C. disappear D. evaporate
59. Charges are usually concentrated at places where the surface is: A. straight B. sharply curved C. oval in shape D. none of the above
60. The __________ is the sensitive part of an electroscope. A. casing B. cap C. gold leaf D. brass rod
61. The casing of an electroscope is earthed so as to screen the leaf from outside interference. A. positively charged B. negatively charged C. neutral D. none of the above
62. A capacitor is a device that __________ charges. A. produces B. emits C. stores D. none of the above
63. The SI unit of flux density is: A. Cm² B. Cm C. Cm⁻² D. C
64. Electric potential is a scalar quantity. A. true B. false C. cannot say D. none of the above
65. Electric field intensity is a scalar quantity. A. true B. false C. cannot say D. none of the above
66. A thermocouple consists of two: A. similar metals B. dissimilar metals C. alloy metals D. none of the above
67. The feature that produces magnetic flux in a generator is the: A. armature B. magnet C. stator D. prime mover
68. The primary purpose of a resistor in a circuit is to: A. store energy B. reduce current flow C. increase voltage D. produce heat
69. What is the function of a transformer? A. Convert mechanical energy to electrical energy B. Change the voltage of alternating current C. Store electrical charge D. Measure electric field intensity
70. What happens when two charged objects are brought close to each other? A. They always attract each other B. They always repel each other C. They exert an electric force on each other D. They emit electromagnetic waves

Energy Physics SS Class