Physics When a ring of metal is heated what happens to its hole ? It expands or contracts according to its coefficient of expansion It expands or contracts according to its diameter Expands Contracts It expands or contracts according to its coefficient of expansion It expands or contracts according to its diameter Expands Contracts ANSWER DOWNLOAD EXAMIANS APP
Physics The rotational effect of a force on a body about an axis of rotation is described in terms of Centrifugal force Centre of gravity Centripetal force Moment of force Centrifugal force Centre of gravity Centripetal force Moment of force ANSWER DOWNLOAD EXAMIANS APP
Physics According to special theory of relativity the mass of a particle Decreases with decrease in velocity. Increases with increase in velocity with respect to an observer. Is independent of its velocity. Decreases with increase in velocity. Decreases with decrease in velocity. Increases with increase in velocity with respect to an observer. Is independent of its velocity. Decreases with increase in velocity. ANSWER DOWNLOAD EXAMIANS APP
Physics The slope of a velocity-time graph represents Speed Distance Displacement Acceleration Speed Distance Displacement Acceleration ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following has the shortest wavelength? Microwaves Gamma rays Radio waves Infrared rays Microwaves Gamma rays Radio waves Infrared rays ANSWER DOWNLOAD EXAMIANS APP
Physics The device which converts sound energy into electrical energy is called Speaker Transmitter Amplifier Microphone Speaker Transmitter Amplifier Microphone ANSWER DOWNLOAD EXAMIANS APP
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