Answer the following: (a) Name the em waves which are used for the treatment of certain forms of cancer. Write their frequency range. (b) Thin ozone layer on top of stratosphere is crucial for human survival. Why? (c) An em wave exerts pressure on the surface on which it is incident. Justify.

Answer the following: (a) Name the em waves which are used for the tre

1.	Answer the following: (a) Name the em waves which are used for the treatment of certain forms of cancer. Write their frequency range. (b) Thin ozone layer on top of stratosphere is crucial for human survival. Why? (c) An em wave exerts pressure on the surface on which it is incident. Justify.
Answer» Solution :X RAYS of `GAMMA` rays Range : `0^18` HZ to `10^22` Hz

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Answer the following: (a) Name the em waves which are used for the treatment of certain forms of cancer. Write their frequency range. (b) Thin ozone layer on top of stratosphere is crucial for human survival. Why? (c) An em wave exerts pressure on the surface on which it is incident. Justify.

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