Physics Rectifiers are used to convert: Low voltage to high voltage High voltage to low voltage Alternating current to Direct current Direct current to Alternating current Low voltage to high voltage High voltage to low voltage Alternating current to Direct current Direct current to Alternating current 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 P 3P 2p/ 3 P/3 P 3P 2p/ 3 P/3 ANSWER DOWNLOAD EXAMIANS APP
Physics Why does water tank appear shallower when viewed from the top? Due to total internal reflection Due to refraction Due to diffraction Due to reflection Due to total internal reflection Due to refraction Due to diffraction Due to reflection ANSWER DOWNLOAD EXAMIANS APP
Physics Tape recorder should not be kept near one of the following things : Magnet Electrical switchboard Radio Clock Magnet Electrical switchboard Radio Clock ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following statements is true when we see ''rainbow' ? In light rainfall, we face Sun We face sun and raindrops The Sun remains behind us and we face raindrops The sky remains clear and the sun is at lower position in the sky In light rainfall, we face Sun We face sun and raindrops The Sun remains behind us and we face raindrops The sky remains clear and the sun is at lower position in the sky ANSWER DOWNLOAD EXAMIANS APP
Physics Heat from the Sun reaches the Earth by Reflection Radiation Convection Conduction Reflection Radiation Convection Conduction ANSWER DOWNLOAD EXAMIANS APP
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