A beggar wrapped himself with a few layers of newspaper on a cold winter night. This helped him to keep himself warm because (a) friction between the layers of newspaper produces heat. (b) air trapped between the layers of newspaper is a bad conductor of heat. (c) newspaper is a conductor of heat. (d) newspaper is at a higher temperature than the temperature of the surrounding.
ScienceClass 7CBSEAnswered 27 Mar 2026
Answer
Soln:
The answer is (b) air trapped between the layers of newspaper is a bad conductor of heat.
Explanation:
The heat from his body will not escape into the surroundings, and this will help him to keep his body warm.
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