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TG EAMCET (EAPCET) Physics Multiple Choice Questions (MCQs)

TG EAMCET - Physics MCQs

TG EAMCET - Physics Multiple Choice Questions (MCQs)

51. Which of the following is the unit of temperature?

a) Joule

b) Kelvin

c) Watt

d) Celsius

Answer: b) Kelvin

52. The change in the length of a metallic rod due to a change in temperature is an example of:

a) Thermal expansion

b) Conduction

c) Radiation

d) Latent heat

Answer: a) Thermal expansion

53. The specific heat capacity of water is highest at:

a) 0°C

b) 100°C

c) 50°C

d) 25°C

Answer: a) 0°C

54. The process of heat transfer by the vibration of particles in a medium is known as:

a) Convection

b) Conduction

c) Radiation

d) Adiabatic process

Answer: b) Conduction

55. The Greenhouse effect is primarily caused by:

a) Radiation from the Sun

b) Absorption of infrared radiation by greenhouse gases

c) Heat loss from the Earth’s surface

d) Reflection of radiation by clouds

Answer: b) Absorption of infrared radiation by greenhouse gases

56. Which of the following laws describes the rate of heat loss from a body in terms of the temperature difference between the body and its surroundings?

a) Newton’s Law of Cooling

b) Stefan-Boltzmann Law

c) Planck's Law

d) Kirchhoff's Law

Answer: a) Newton’s Law of Cooling

57. The Zeroth law of thermodynamics deals with:

a) Conservation of energy

b) Heat flow between bodies

c) The concept of temperature

d) Reversible processes

Answer: c) The concept of temperature

58. In an isothermal process, the temperature of the system:

a) Increases

b) Decreases

c) Remains constant

d) Can either increase or decrease

Answer: c) Remains constant

59. A Carnot engine operates between two reservoirs at temperatures T1 and T2. The efficiency of the engine is:

a) 1 - T1/T2

b) T1/T2

c) T2/T1

d) 1 - T2/T1

Answer: d) 1 - T2/T1

60. Which of the following processes is irreversible?

a) Isobaric process

b) Isothermal process

c) Adiabatic process

d) Free expansion of a gas

Answer: d) Free expansion of a gas

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TG EAMCET (EAPCET) Physics Multiple Choice Questions (MCQs)

TG EAMCET - Physics Multiple Choice Questions (MCQs)

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