NEETPhysics-Fluid Mechanics

NEET Physics Viscosity MCQ Question

Type: MCQ-numerical-Medium-Class 11

A metal block of area 0.10 m² is connected to a 0.01 kg mass via a string that passes over a massless and frictionless pulley as shown in figure. A liquid with a film thickness of 0.3 mm is placed between the block and the table. When released the block moves to the right with a constant of 0.085 m s⁻¹. The coefficient of viscosity of the liquid is

Question diagram
A

2.5 × 10⁻³ Pa s

B

3.5 × 10⁻³ Pa s

C

4.5 × 10⁻³ Pa s

D

6.5 × 10⁻³ Pa s

Correct Answer

Option 1

Detailed Explanation

Using the formula for viscous force and given parameters, the viscosity is calculated to be 2.5 × 10⁻³ Pa s.

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