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Question: Answered & Verified by Expert
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.
PhysicsElectromagnetic WavesAIIMSAIIMS 2010
Options:
  • 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.
Solution:
1526 Upvotes Verified Answer
The correct answer is: If assertion is true but reason is false
The earth's atmosphere is transparent to visible light and radio waves, but absorbs X-rays. Therefore $\mathrm{X}$-rays telescope cannot be used on earth surface.

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