Physics Ball bearings are used in cycles, scooters etc to Increase the friction between the wheel and the axle None of these Reduce the friction between the wheel and the axle Reduce the friction between ground and the whee Increase the friction between the wheel and the axle None of these Reduce the friction between the wheel and the axle Reduce the friction between ground and the whee ANSWER DOWNLOAD EXAMIANS APP
Physics When two similar sources vibrate with slightly different frequencies, a regular rise and fall occurs in the loudness of tone. This phenomenon is known as Echo Doppler effect Resonance Beats Echo Doppler effect Resonance Beats ANSWER DOWNLOAD EXAMIANS APP
Physics Infrasonic sound has a frequency lower than 20 Hz 5 Hz 32 Hz 15 Hz 20 Hz 5 Hz 32 Hz 15 Hz ANSWER DOWNLOAD EXAMIANS APP
Physics Super cooling stands for cooling of a liquid : At freezing point Above melting point At melting point Below freezing point At freezing point Above melting point At melting point Below freezing point ANSWER DOWNLOAD EXAMIANS APP
Physics When the Sun is near the horizon during the morning or evening, it appears reddish. The phenomenon that is responsible for this observation is Dispersion of light Refraction of light Scattering of light Reflection of light Dispersion of light Refraction of light Scattering of light Reflection of light ANSWER DOWNLOAD EXAMIANS APP
Physics Lens is made up of which glass Pyrex glass Ordinary glass Cobalt glass Flint glass Pyrex glass Ordinary glass Cobalt glass Flint glass ANSWER DOWNLOAD EXAMIANS APP
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