Physics What is the minimum distance (in metres) required to hear an echo? 21 13 10 17 21 13 10 17 ANSWER DOWNLOAD EXAMIANS APP
Physics A dynamo is a device which Converts mechanical energy into electrical energy Converts electrical energy into mechanical energy Creates electrical energy Creates mechanical energy Converts mechanical energy into electrical energy Converts electrical energy into mechanical energy Creates electrical energy Creates mechanical energy ANSWER DOWNLOAD EXAMIANS APP
Physics The mercury and sodium street lamps light up because of : Electron absorption Electron emission Atomic absorption Atomic emission Electron absorption Electron emission Atomic absorption Atomic emission ANSWER DOWNLOAD EXAMIANS APP
Physics The wave theory of light can explain Interference of light Comptom effect Photoelectric effect Black body spectrum Interference of light Comptom effect Photoelectric effect Black body spectrum ANSWER DOWNLOAD EXAMIANS APP
Physics According to the theory of relativity, which of the following always remains constant ? Length of an object Space Time Velocity of light Length of an object Space Time Velocity of light ANSWER DOWNLOAD EXAMIANS APP
Physics When a light wave is reflected from a mirror, there is a change in its Wavelength Frequency Velocity Amplitude Wavelength Frequency Velocity Amplitude ANSWER DOWNLOAD EXAMIANS APP
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