(A) : Neutrons penetrate matter more readily compared to protons
(R) : Neutrons are slightly more massive than protons

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(A) is true but (R) is false

Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are false

Both (A) and (R) are true and (R) is not the correct explanation of (A)

answer is B.

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Detailed Solution

Neutrons are uncharged particles so these are not deflected by electric or magnetic field. Hence, neutrons penetrate matter more readily compared to protons.

Neutrons are slightly more massive than protons.

Both (A) and (R) are true and (R) is not the correct explanation of (A).

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