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

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
X-ray astronomy is the study of X-rays from astronomical objects. X-rays are absorbed by the atmospheres. Hence, their study is possible only from satellites. Focussing of x-rays is difficult and hence increasing its efficiency is difficult.
So, the assertion is correct and the reason is incorrect.

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