Physics The cover of a solar cooker is made of glass because It rediates heat better than metals It retains the heat inside by the green house effect It absorbs sun's rays It reflects sun's rays It rediates heat better than metals It retains the heat inside by the green house effect It absorbs sun's rays It reflects sun's rays ANSWER DOWNLOAD EXAMIANS APP
Physics Due to temperature variation along a conductor, potential variation occurs along it. This phenomenon is known as Peltier effect Seebeck effect Joule effect Thomson effect Peltier effect Seebeck effect Joule effect Thomson effect ANSWER DOWNLOAD EXAMIANS APP
Physics Hot water is poured simultaneously in four metallic tumblers painted outside with different points. After some time the water will be found to have cooled most in the tumbler painted. Rough black Shining black Shining white Rough white Rough black Shining black Shining white Rough white ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following options correctly explains the term heat budget? It is the balance between incoming and outgoing radiation It is the radiation from the earth in the form of long waves. It is a mode of transfer of heat through matter by molecular activity. It is the amount of heat which the surface of earth receives from the sun. It is the balance between incoming and outgoing radiation It is the radiation from the earth in the form of long waves. It is a mode of transfer of heat through matter by molecular activity. It is the amount of heat which the surface of earth receives from the sun. ANSWER DOWNLOAD EXAMIANS APP
Physics If ice floating on water in a vessel melts, the water level in the vessel ________ . Does not change First increases before decreasing Increases Decreases Does not change First increases before decreasing Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Physics A hydrogen balloon floats up because of Air pressure decreases with decrease in height Weight of the balloon is less than the weight of air displaced by it. The pressure inside the balloon is more than the pressure outside it Air pressure decreases with decrease in weight Air pressure decreases with decrease in height Weight of the balloon is less than the weight of air displaced by it. The pressure inside the balloon is more than the pressure outside it Air pressure decreases with decrease in weight ANSWER DOWNLOAD EXAMIANS APP
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