Physics Why do birds not have respiratory trouble at the time of flying at high altitude ? Their lungs are very large They use less oxygen They have extra air sacs They fly inactively Their lungs are very large They use less oxygen They have extra air sacs They fly inactively ANSWER DOWNLOAD EXAMIANS APP
Physics The device used to change the speed of an electric fan is Rectifier Switch Regulator Amplifier Rectifier Switch Regulator Amplifier ANSWER DOWNLOAD EXAMIANS APP
Physics When a bottle of perfume is opened in one corner of a room the smell spreads soon throughout the room. This is an example of Viscosity Capillarity Surface tension Diffusion Viscosity Capillarity Surface tension Diffusion ANSWER DOWNLOAD EXAMIANS APP
Physics What is the reason for formation of Mirage in desert? Reflection of light Refraction of light Total internal reflection of light Both Refraction and Total internal reflection of light Reflection of light Refraction of light Total internal reflection of light Both Refraction and Total internal reflection of light ANSWER DOWNLOAD EXAMIANS APP
Physics A pilot has to release the bomb to hit a target None of these Beyond the target Before the target Right above the target None of these Beyond the target Before the target Right above the target ANSWER DOWNLOAD EXAMIANS APP
Physics Ultrasound devices operate with minimum frequency from 45 kHz 60 kHz 35 kHz 20kHz 45 kHz 60 kHz 35 kHz 20kHz ANSWER DOWNLOAD EXAMIANS APP
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