Assertion :Neutrons penetrate matter more readily as compared to protons. Reason: Neutrons are slightly more massive than protons.

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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Assertion is incorrect but Reason is correct

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Mass of proton, $M_{p} = 1.67265 a . m . u$
Mass of neutron, $M_{n} = 1.67495 a . m . u$
Both the statements are correct but the Reason is not the correct explanation of the Assertion.
Because the proton is a positively charged particle whereas neutron is neutral. Thus the positive charge of nucleus repels the proton while penetrating but not the neutron. Hence the penetrating power of neutron is more than that of proton.

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Q. Assertion :Neutrons penetrate mater more readily as compared to protons. Reason: Neutrons are slightly more massive than protons.

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