Duration: 2:23

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Directions : Choose the correct option.
(a) If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
(b) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
(c) If Assertion is true, but the Reason is false.
(d) If Assertion is false but the Reason is true.
(e) If both Assertion and Reason are false.
Assertion : All surfaces shown in figure are smooth. Block \( A \) comes down along the wedge \( B \). Work done by normal reaction (between \( A \) and \( B \) ) on \( B \) is positive while on \( A \) it is negative.
Reason : Angle between normal reaction and net displacement of \( A \) is greater than \( 90^{\circ} \) while between normal reaction and net displacement of \( B \) is less than \( 90^{\circ} \).
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