Centre of Gravity: Physics Trivia Questions and Answers PDF Download eBook - 173

MCQ: Center of gravity of an object depends on it's

1. weight
2. mass
3. density
4. shape

MCQ: Air conditioners are good example of

1. conduction
2. convection
3. radiation
4. conduction and radiation both

MCQ: If we put some water in a pot and put it over the Bunsen burner, the thermal energy supplied to the water would lead to a gain in

1. external energy
2. internal energy
3. chemical energy
4. physical energy

MCQ: Angle of incidence in optically denser medium for which angle of refraction in less dense medium is 90° is termed as

1. normal angle
2. covalent angle
3. critical angle
4. internal angle

MCQ: Heat capacity of a substance is equal to

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