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NEET UG PHYSICS MCQ: THERMAL PROPERTIES OF MATTER
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What is the cause of the 'Greenhouse effect'?
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Correct option: A
Infrared rays
Option A (Infrared rays) is correct because greenhouse gases absorb and re-emit infrared radiation, trapping heat in the Earth's atmosphere.
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An ice cube of dimensions is placed in an insulation box of wall thickness . The box keeping the ice cube at of temperature is brought to a room of temperature . The rate of melting of ice is approximately.
(Latent heat of fusion of ice is and thermal conducting of insulation wall is A black body radiates heat energy at the rate of at temp. of . The temp of black body at which rate becomes is: The amount of radiation emitted by a perfectly black body is proportional to Amount of heat required to raise the temperature of a body through 1K is called its If Poissonβs ratio is for a material, then the material is
(Latent heat of fusion of ice is and thermal conducting of insulation wall is A black body radiates heat energy at the rate of at temp. of . The temp of black body at which rate becomes is: The amount of radiation emitted by a perfectly black body is proportional to Amount of heat required to raise the temperature of a body through 1K is called its If Poissonβs ratio is for a material, then the material is