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Questions  >>  CBSE XII  >>  Physics  >>  Electromagnetic waves
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Optical and radio telescopes are built on the ground but x- ray astronomy is possible only from satellite orbiting the earth . why ?

$\begin{array}{1 1} \text{x-rays are of very short , wave length } \\ \text{x-rays are of very long , wave length } \\ \text{x-rays are of very high frequencies} \\ \text{x-rays are absorbed by the atmosphere} \end{array} $

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Solution :
Optical and radio waves can penetrate the atmosphere where as x- rays , are of very short
Wave length and hence absorbed by the atmosphere
This is the leason why we can work with optical and radio telescopes on earth's surface , but x-rays astronomical telescopes must be used on the satellite orbiting above the earth's atmosphere
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