Physics The intensity ratio of waves is 25 : 9. What is the ratio of their amplitudes? 0.21041666666667 0.12847222222222 1.0479166666667 2.0958333333333 0.21041666666667 0.12847222222222 1.0479166666667 2.0958333333333 ANSWER DOWNLOAD EXAMIANS APP
Physics On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : Metals have higher thermal capacity than plastics Metals are good conductors of heat Plastics have a lower density than metals Plastics have a higher thermal conductivity than metals Metals have higher thermal capacity than plastics Metals are good conductors of heat Plastics have a lower density than metals Plastics have a higher thermal conductivity than metals ANSWER DOWNLOAD EXAMIANS APP
Physics A rubber ball is dropped from a height of 2 metres. To what height will it rise if there is no loss of energy/velocity after rebounding ? 4 metres 2 metres 3 metres 1 metre 4 metres 2 metres 3 metres 1 metre ANSWER DOWNLOAD EXAMIANS APP
Physics Unit of impedance is ________ Hertz Tesla Ohm Henry Hertz Tesla Ohm Henry ANSWER DOWNLOAD EXAMIANS APP
Physics Copper wires are generally used for electrical power transmission instead of iron wire because : Copper is lighter than iron Copper is a better conductor of electricity than iron Copper can take higher power than iron Copper is cheaper than iron Copper is lighter than iron Copper is a better conductor of electricity than iron Copper can take higher power than iron Copper is cheaper than iron ANSWER DOWNLOAD EXAMIANS APP
Physics Calculate the time period (in seconds) of a sound wave of wavelength 4m traveling with a speed of 500m/s 0.008 2000 0.016 1000 0.008 2000 0.016 1000 ANSWER DOWNLOAD EXAMIANS APP
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