Physics

(i) Name the radiations which are absorbed by greenhouse gases in the earth’s atmosphere.

(ii) A radiation X is focused by a particular device on the bulb of a thermometer and mercury in the thermometer shows a rapid increase. Name the radiation X.

(iii) Name two factors on which the heat energy liberated by a body depends.

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ICSE 2017

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Answer

(i) The green house gases in the earth's atmosphere absorb the low energy infrared radiations.

(ii) The radiation X is Infrared radiation.

(iii) The two factors are :

  1. Material of the body
  2. Temperature of the body.

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