Physics Cloudy nights are warmer compared to clear cloudless nights, because clouds mainly Absorb heat from the atmosphere send it towards earth Produce heat and radiate it toward earth Prevent cold waves from the sky descending on earth Reflect back the heat given by earth Absorb heat from the atmosphere send it towards earth Produce heat and radiate it toward earth Prevent cold waves from the sky descending on earth Reflect back the heat given by earth ANSWER DOWNLOAD EXAMIANS APP
Physics The wavelength at which the peak of intensity of blackbody radiation occurs Decreases with increase in temperature Does not follow any pattern as temperature changes Is the same at all temperatures Increases with increase in temperature Decreases with increase in temperature Does not follow any pattern as temperature changes Is the same at all temperatures Increases with increase in temperature ANSWER DOWNLOAD EXAMIANS APP
Physics A particle dropped from the top of a tower uniformly falls on ground at a distance which is equal to the height of tower. Which of the following paths will be traversed by the particle ? Parabolic Great circle Hyper–parabolic Circle Parabolic Great circle Hyper–parabolic Circle ANSWER DOWNLOAD EXAMIANS APP
Physics If density of oxygen is 16 times that of hydrogen, what will be their corresponding ratio of velocity of sound? 0.052777777777778 0.084027777777778 0.16736111111111 0.044444444444444 0.052777777777778 0.084027777777778 0.16736111111111 0.044444444444444 ANSWER DOWNLOAD EXAMIANS APP
Physics If the velocity-time graph of a particle is represented by y = mt + c, then the particle is moving with Constant velocity Constant speed Varying acceleration Constant acceleration Constant velocity Constant speed Varying acceleration Constant acceleration ANSWER DOWNLOAD EXAMIANS APP
Physics A transformer works on the principle of Inverter Self induction Mutual induction Generator Inverter Self induction Mutual induction Generator ANSWER DOWNLOAD EXAMIANS APP
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