Introduction to Light Quiz with Answers PDF Download – Test 29

MCQ 141: _______ is a form of energy.:

1. Force
2. Acceleration
3. Light
4. Speed

MCQ 142: Specific latent heat of fusion is:

1. the amount of heat required to raise the temperature of a 1 kg of a substance by 1 K
2. the amount of heat required to change the phase of a substance from solid to liquid without any change in temperature
3. the amount of heat required to change the phase of a 1 kg of substance from solid to liquid without any change in temperature
4. the amount of heat required to change the phase of a 1 kg of substance from liquid to gas without any change in temperature

MCQ 143: An object is lifted 5 m above the levelled ground, the mass of the object is 20 kg and the gravitational pull is 10 N kg^-2, the E_p of the object is:

1. 40 J
2. 1000 J
3. 2.5 J
4. 0.4 J

MCQ 144: A piece of carbon of mass 0.40 kg requires thermal energy of 20 J to get heated from a temperature of 5 °C to 9 °C, the specific heat capacity of the carbon would be:

1. 1.25 J kg^-1 °C^-1
2. 12.5 J kg^-1 °C^-1
3. 125 J kg^-1 °C^-1
4. 1250 J kg^-1 °C^-1

MCQ 145: Periodic time of a simple pendulum depends on:

1. The mass of the pendulum bob
2. The collective mass of the pendulum bob and thread
3. The length of the pendulum
4. None of the above