Question

Assertion: A fluid flowing out of a small hole in a vessel apply a backward thrust on the vessel.
Reason: According to equation of continuity, the product of area and velocity remain constant.
A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. if assertion is true but reason is false.
D. if both assertion and reason are false.

Answer 1

Correct Answer - A
Due to small area of cross-section of the hole, fluid flows out of the vessel with a large speed and thus the fluid possesess a large linear momentum. As no external force acts on the system, in order to conserve linear momentum, the vessel acquires a velocity in backward thrust result on the vessel.