Question

Q-9). Answer the following questions in long form :- 1) Describe the adaptation of penguins to the polar region. 2) Define radiation and radiant heat . 3) Why do woollen clothes keep us warm when it is cold outside ? 4) What is meant by heating effect of current ?Name three appliances based on this effect. 5) What is the role of fuse in any electrical circuit ?​

Answer 1

Answer:

Wool is a poor conductor of heat .Moreover ,there's air trapped in between the wool fibers .This air prevent the flow of heat from our body to surroundings. So,we feel warm

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