Physics When a ring of metal is heated what happens to its hole ? Contracts Expands It expands or contracts according to its diameter It expands or contracts according to its coefficient of expansion Contracts Expands It expands or contracts according to its diameter It expands or contracts according to its coefficient of expansion ANSWER DOWNLOAD EXAMIANS APP
Physics In a diesel engine the high temperature needed to ignite the fuel is achieved by The battery Compressing air in the cylinders Using heat from exhaust An electrical spark The battery Compressing air in the cylinders Using heat from exhaust An electrical spark ANSWER DOWNLOAD EXAMIANS APP
Physics Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this? I.Diffusion II.Refraction III.Internal reflection I and III II and III I, II and III I and II I and III II and III I, II and III I and II ANSWER DOWNLOAD EXAMIANS APP
Physics What is the range of Strong Nuclear force? None Very short Nuclear size Very short Subnuclear size Infinite None Very short Nuclear size Very short Subnuclear size Infinite ANSWER DOWNLOAD EXAMIANS APP
Physics The characteristic invalid for heat radiation is that it travels : In all directions In a straight line With the speed of light Heating the medium through which it passes In all directions In a straight line With the speed of light Heating the medium through which it passes ANSWER DOWNLOAD EXAMIANS APP
Physics During hot weather, the fan produces a feeling of comfort. This is because Conductivity of air increases Fan supplies cool air Fan cools the air Our perspiration eva-porates rapidly Conductivity of air increases Fan supplies cool air Fan cools the air Our perspiration eva-porates rapidly ANSWER DOWNLOAD EXAMIANS APP
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