Physics Ultrasound devices operate with minimum frequency from 35 kHz 60 kHz 45 kHz 20kHz 35 kHz 60 kHz 45 kHz 20kHz ANSWER DOWNLOAD EXAMIANS APP
Physics Calculate the time period (in seconds) of a sound wave of wavelength 4m traveling with a speed of 500m/s 0.016 2000 0.008 1000 0.016 2000 0.008 1000 ANSWER DOWNLOAD EXAMIANS APP
Physics An object having the capability to do work is said to possess Energy Force Inertia Pressure Energy Force Inertia Pressure ANSWER DOWNLOAD EXAMIANS APP
Physics The velocity of the sound is highest in Air Water Vacuum Metal Air Water Vacuum Metal ANSWER DOWNLOAD EXAMIANS APP
Physics On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : Plastics have a higher thermal conductivity than metals Plastics have a lower density than metals Metals have higher thermal capacity than plastics Metals are good conductors of heat Plastics have a higher thermal conductivity than metals Plastics have a lower density than metals Metals have higher thermal capacity than plastics Metals are good conductors of heat ANSWER DOWNLOAD EXAMIANS APP
Physics Total internal reflection can not take place when light goes from : Glass to water Water to air Water to glass Glass to air Glass to water Water to air Water to glass Glass to air ANSWER DOWNLOAD EXAMIANS APP
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