Physics Materials for rain-proof coats and tents owe their water-proof properties to surface tension specific gravity viscosity elasticity surface tension specific gravity viscosity elasticity ANSWER DOWNLOAD EXAMIANS APP
Physics A hydrogen balloon floats up because of The pressure inside the balloon is more than the pressure outside it Air pressure decreases with decrease in weight Weight of the balloon is less than the weight of air displaced by it. Air pressure decreases with decrease in height The pressure inside the balloon is more than the pressure outside it Air pressure decreases with decrease in weight Weight of the balloon is less than the weight of air displaced by it. Air pressure decreases with decrease in height ANSWER DOWNLOAD EXAMIANS APP
Physics A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole ? Increase Remain constant Dacrease Will increase first and then dcrease Increase Remain constant Dacrease Will increase first and then dcrease ANSWER DOWNLOAD EXAMIANS APP
Physics In SONAR which kind of wave is used? Audible sound Infrasonic Ultrasonic Radio Audible sound Infrasonic Ultrasonic Radio ANSWER DOWNLOAD EXAMIANS APP
Physics Sound of frequency below 20 Hz is called supersonics audio sounds infrasonic ultrasonic supersonics audio sounds infrasonic ultrasonic 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 Reflection of light Scattering of light Refraction of light Dispersion of light Reflection of light Scattering of light Refraction of light ANSWER DOWNLOAD EXAMIANS APP
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