Physics Why are we able to hear short wave broadcasts better than long wave broadcasts ? 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. Short wave broadcasts are made by nearby radio stations. ANSWER DOWNLOAD EXAMIANS APP
Physics Which, of the following radiations has the least wavelength ? G-rays X-rays A-rays B-rays G-rays X-rays A-rays B-rays ANSWER DOWNLOAD EXAMIANS APP
Physics A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole ? Increase Remain constant Dacrease Will increase first and then dcrease Increase Remain constant Dacrease Will increase first and then dcrease ANSWER DOWNLOAD EXAMIANS APP
Physics A metal ball and a rubber ball, both having the same mass, strike a wall normally with the same velocity. The rubber ball rebounds and the metal ball does not rebound. It can be concluded that The metal ball suffers greater change in momentum The rubber ball suffers greater change in momentum The initial momentum of the rubber ball is greater than that of the metal ball Both suffer the same change in momentum The metal ball suffers greater change in momentum The rubber ball suffers greater change in momentum The initial momentum of the rubber ball is greater than that of the metal ball Both suffer the same change in momentum ANSWER DOWNLOAD EXAMIANS APP
Physics The slope of a velocity-time graph represents Displacement Speed Distance Acceleration Displacement Speed Distance Acceleration ANSWER DOWNLOAD EXAMIANS APP
Physics A cycle tyre bursts suddenly. This represents an : Isochoric process Isothermal process Isoboric process Adiabatic process Isochoric process Isothermal process Isoboric process Adiabatic process ANSWER DOWNLOAD EXAMIANS APP
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