Subjective Type

Answer the following questions: (i) Which segment of electromagnetic waves has highest frequency? How are these waves produced? Give one use of these waves. (ii) Which $$EM$$ waves lie near the high frequency end of visible part of $$EM$$ spectrum? Give its one use. In what way this component of light has harmful effects on humans?

Solution

(i) Gamma rays have the highest frequency. These are produced during nuclear reactions and also emitted by radioactive nuclei. They are used in medicine to destroy cancer cells.
(ii) Ultraviolet rays lie near the high frequency end of visible part of EM spectrum. They are used to sterlize drinking water and surgical instruments. Exposure to $$UV$$ radiation induces the production of more melanin, causing tanning of the skin.

SIMILAR QUESTIONS

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