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Question

Physics Question on Atoms

X-ray astronomy is possible only from satellites orbiting the earth. Efficiency of X-rays telescope is large as compared to any other telescope.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false

Answer

If assertion is true but reason is false

Explanation

Solution

The earth?? atmosphere is transparent to visible light and radio waves, but absorbs XX-rays. Therefore XX- rays telescope cannot be used on earth surface.