A cube of side $a$ and density $ρ$ is sliding down an incline plane with constant speed $v$ . There is a thin layer of liquid between cube and surface of the plane. Coefficient of viscosity is $η .$ Inclined plane is at $30 °$ from horizontal plane. Find thickness of liquid layer.

Important Questions on Mechanical Properties of Fluids

MEDIUM

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>EXERCISE 9.6>Q 40

A lead shot of

1 mm

diameter falls through a long column of glycerine. The variation of the velocity

v

with distance covered

(s)

is represented by

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IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>EXERCISE 9.6>Q 41

In a surface tension experiment with a capillary tube water rises upto

0.1 m

. If the same experiment is repeated on an artificial satellite, which is revolving around the earth, water will rise in the capillary tube upto a height of

EASY

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IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>EXERCISE 9.6>Q 42

A capillary tube (A) is dipped in water. Another identical tube (B) is dipped in a soapwater solution. Which of the following shows the relative nature of the liquid columns in the two tubes?

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IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 9 - Mechanical Properties of Fluids>EXERCISE 9.6>Q 43

A long cylindrical glass vessel has a small hole of radius