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IGCSE O Level Physics Practice Test 173

# Centre of Gravity: Physics Quiz Questions and Answers PDF - 173

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## Centre of Gravity: Physics Questions and Answers : Quiz 173

MCQ 861: Center of gravity of an object depends on it's

A) weight
B) mass
C) density
D) shape

MCQ 862: Air conditioners are good example of

A) conduction
B) convection

MCQ 863: 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

A) external energy
B) internal energy
C) chemical energy
D) physical energy

MCQ 864: Angle of incidence in optically denser medium for which angle of refraction in less dense medium is 90° is termed as

A) normal angle
B) covalent angle
C) critical angle
D) internal angle

MCQ 865: Heat capacity of a substance is equal to

A) the amount of heat required to raise the temperature of a 1 kg of a substance by 1 K
B) the amount of heat required to raise the temperature of a substance by 1 K
C) the amount of heat required to change the phase of a substance from solid to liquid without any change in temperature
D) the amount of heat required to change the phase of a substance from liquid to gas without any change in temperature

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