Nitin and Rajeec were studying the effect of certain radiations on flower plants. Nitin expossed his plants to ultraviolet rays, found that his plants got damaged after a few days. Rajeev exposed his plants to infrared rays, found that his plants had a beautifulbloom, after a few days. (i) What is the difference between ultraviolet rays and infrared rays? Why were the plants exposed to ultraviolet rays damaged and the plants exposed to infrared rays had a beautiful bloom? (iii) What are the basic values you have learnt from this study?

Nitin and Rajeec were studying the effect of certain radiations on flo

1.	Nitin and Rajeec were studying the effect of certain radiations on flower plants. Nitin expossed his plants to ultraviolet rays, found that his plants got damaged after a few days. Rajeev exposed his plants to infrared rays, found that his plants had a beautifulbloom, after a few days. (i) What is the difference between ultraviolet rays and infrared rays? Why were the plants exposed to ultraviolet rays damaged and the plants exposed to infrared rays had a beautiful bloom? (iii) What are the basic values you have learnt from this study?
Answer» Solution :(i) The frequency of ultraviolet rays `(v_(UV))` is `8xx10^(14) Hz` to `5xx10^(16)Hz`. The frequency of infrared rays `(v_(IR))` is `3xx10^11Hz 4xx10^14 Hz`. As energy, `E=hv`, so ultraviolet rays are much more energetic than infrared rays. (ii) A flower plant is very delicate. It can not tolerate the exposure of HIGH energy rays. As ultraviolet rays are of high energy than infrared rays therefore, the plants EXPOSED to ultraviolet rays were diamaged. And the plants exposed to infrared rays had a beutiful bloom. (iii) This study IMPLIES that small children are like flower plants. They require soft and gentle care by their mothers. Exposure of young kids to harsher treatment is dangerousand it must be avoided.

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