Physics If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated? Unchanged Increases Decreases Depends upon the metal Unchanged Increases Decreases Depends upon the metal ANSWER DOWNLOAD EXAMIANS APP
Physics Why are we able to hear short wave broadcasts better than long wave broadcasts ? Short wave broadcasts are made by nearby radio stations. Short waves are more energetic than long waves. By convention, short waves are meant for long distances, whereas long waves are reserved for short distances. Short waves are unaffected by atmospheric disturbances. Short wave broadcasts are made by nearby radio stations. Short waves are more energetic than long waves. By convention, short waves are meant for long distances, whereas long waves are reserved for short distances. Short waves are unaffected by atmospheric disturbances. ANSWER DOWNLOAD EXAMIANS APP
Physics Suppose voltage V is applied across a resistance R. The power dissipated in the resistance is P. Now the same voltage V is applied across a parallel combination of three equal resistors each of resistance R. Then the power dissipated in the second case will be 3P P/3 2p/ 3 P 3P P/3 2p/ 3 P ANSWER DOWNLOAD EXAMIANS APP
Physics Mach number is used in connection with the speed of ships aircraft spacecraft sound ships aircraft spacecraft sound ANSWER DOWNLOAD EXAMIANS APP
Physics Friction can be reduced by changing from Rolling to Sliding Static to Dynamic Sliding to Rolling Dynamic to Static Rolling to Sliding Static to Dynamic Sliding to Rolling Dynamic to Static ANSWER DOWNLOAD EXAMIANS APP
Physics According to special theory of relativity the mass of a particle Decreases with increase in velocity. Increases with increase in velocity with respect to an observer. Is independent of its velocity. Decreases with decrease in velocity. Decreases with increase in velocity. Increases with increase in velocity with respect to an observer. Is independent of its velocity. Decreases with decrease in velocity. ANSWER DOWNLOAD EXAMIANS APP
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