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NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

1 Easy

1 of 1

Application +4 | -1

A barometer kept in an elevator reads

76 {~cm}

of

{Hg}

when elevator is accelerating upwards. Possible value of pressure inside the elevator is (in

{cm}

of

{Hg})

View answer and explanation

Correct option: A

78

Option A (78) is correct because when the elevator accelerates upwards, the effective gravity increases, leading to a higher barometer reading.

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With the increase in temperature viscosity of a liquid - Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: When you squeeze one end of a tube to get toothpaste out from the other end, Pascal's principle is observed.

Reason R: A change in the pressure applied to an enclosed incompressible fluid is transmitted undiminished to every portion of the fluid and to the walls of its container.

In the light of the above statements, choose the most appropriate answer from the options given below. Hydraulic lifts and hydraulic brakes are based
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4\mathrm{m}{\mathrm{s}^{ - 1}}

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