Assertion (A): The stream of water flowing at | vedclass

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Question

(A) The Assertion is true because when water flows vertically upward,gravity acts against the motion,causing the velocity to decrease. By the equation

Vedclass · Accepted Answer

If both Assertion and Reason are true and Reason is the correct explanation of Assertion.

Vedclass · Answer

(A) The Assertion is true because when water flows vertically upward,gravity acts against the motion,causing the velocity to decrease. By the equation of continuity $(A_1v_1 = A_2v_2)$,as velocity $(v)$ decreases,the cross-sectional area $(A)$ must increase,causing the stream to spread. Conversely,when flowing downward,gravity increases the velocity,causing the stream to narrow.The Reason is also true; the equation of continuity is based on the principle of conservation of mass for an incompressible fluid,which states that the volume flow rate $(Q = Av)$ remains constant.Since the change in the cross-sectional area of the stream is directly caused by the change in velocity due to gravity,and the relationship between area and velocity is governed by the constant volume flow rate,the Reason correctly explains the Assertion.

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