Assertion :Amongst alpha,beta and gamma rays, α− particle has maximum penetrating power. Reason: The alpha particle is heavier than beta and gamma rays.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution
The correct option is D Both Assertion and Reason are incorrect The penetrating power is maximum in case of gamma rays because gamma rays are an electromagnetic radiation of very small wavelength.