Physics Which phenomenon is responsible for the echo of sound wave? Reflection Interference Refraction Polarisation Reflection Interference Refraction Polarisation ANSWER DOWNLOAD EXAMIANS APP
Physics The magnifying power of an astronomical telescope can be decreased by Increasing the focal length of the objective Increasing the focal length of the eyepiece Decreasing the focal length of the eyepiece None of these Increasing the focal length of the objective Increasing the focal length of the eyepiece Decreasing the focal length of the eyepiece None of these ANSWER DOWNLOAD EXAMIANS APP
Physics Lightning heats the surrounding air to 30000 deg Cent 3000 deg Cent 300 deg Cent 300000 deg Cent 30000 deg Cent 3000 deg Cent 300 deg Cent 300000 deg Cent ANSWER DOWNLOAD EXAMIANS APP
Physics Loudness of sound depends on Amplitude Pitch Wavelength Frequency Amplitude Pitch Wavelength Frequency ANSWER DOWNLOAD EXAMIANS APP
Physics Radio telescopes are better than optical telescopes because they can work even in cloudy conditions All of these they can work during the day and night they can detect faint galaxies which no optical telescope can they can work even in cloudy conditions All of these they can work during the day and night they can detect faint galaxies which no optical telescope can ANSWER DOWNLOAD EXAMIANS APP
Physics Damp clothes are dried in spin dryers by the action of Centripetal forces Centrifugal forces Central forces Non central forces Centripetal forces Centrifugal forces Central forces Non central forces ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS