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Write the frequency source of production...

Write the frequency source of production and uses of Ultraviolet radiation.

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It is produced by sun, arc and ionized gases. The wavelength range is `6 xx 10^(-10) " m to " 4 xx 10^(-7)`m and frequency range are `5 xx 10^(17) " Hz to " 7 xx 10^(14)`Hz. It has less penetrating power. It can be absorbed by atmospheric ozone and harmful to human body. it is used to destroy bacteria, sterilizing the surgical instruments, burglar alarm, detect the invisible writing, finger prints and also in the study of molecular structure.
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