Physics Cloudy nights are warmer compared to clear cloudless nights, because clouds mainly Produce heat and radiate it toward earth Reflect back the heat given by earth Absorb heat from the atmosphere send it towards earth Prevent cold waves from the sky descending on earth Produce heat and radiate it toward earth Reflect back the heat given by earth Absorb heat from the atmosphere send it towards earth Prevent cold waves from the sky descending on earth ANSWER DOWNLOAD EXAMIANS APP
Physics Ultrasound devices operate with minimum frequency from 20kHz 45 kHz 35 kHz 60 kHz 20kHz 45 kHz 35 kHz 60 kHz ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is not a valid conservation law of classical physics? Law of conservation of angular momentum Law of conservation of current Law of conservation of charge Law of conservation of energy Law of conservation of angular momentum Law of conservation of current Law of conservation of charge Law of conservation of energy ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following causes adiabatic temperature changes in atmosphere? Latent heat of condensation Deflection and advection Partial absorption of solar radiation by the atmosphere Expansion and compression of the air Latent heat of condensation Deflection and advection Partial absorption of solar radiation by the atmosphere Expansion and compression of the air ANSWER DOWNLOAD EXAMIANS APP
Physics An ice block with a piece of lead embeded in it floats in water. If ice melts the water level Remains same Falls first and then rises Rises Falls Remains same Falls first and then rises Rises Falls ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is not an aerosol? Fog Mud Smoke Dust Fog Mud Smoke Dust ANSWER DOWNLOAD EXAMIANS APP
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