Physics · JEE

Important Questions: Viscosity, Stoke's law, terminal velocity, streamline and turbulent flow, critical velocity for JEE

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The most important Viscosity, Stoke's law, terminal velocity, streamline and turbulent flow, critical velocity questions for JEE cover conceptual traps, standard results, and numerical patterns from Viscosity, Stoke's law, terminal velocity, streamline and turbulent flow, critical velocity. Goodmarks provides 21+ high-yield MCQs with full solutions.

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Syllabus context

Part of Properties of Solids and Liquids in JEE Main Physics.

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Q1PhysicsUnit 7: Properties of Solids and Liquids

Assertion A liquid will flow faster and more smoothly from a sealed can when two holes are punched in the can than when one hole is punched. Reason The flow becomes streamlined with two holes rather than with one hole.

Q2PhysicsUnit 7: Properties of Solids and Liquids

Will a parachute work in vacuum?

Q3PhysicsUnit 7: Properties of Solids and Liquids

According to Stoke's law, the viscous drag force, on an oil drop is proportional to:

Q4PhysicsUnit 7: Properties of Solids and Liquids

A marble of mass

x

and diameter

2 r

is gently released a tall cylinder containing honey.If the marble displaces mass

\$ \$ y(\langle 1, x)

of the liquid then the terminal velocity is proportional to

Q5PhysicsUnit 7: Properties of Solids and Liquids

A small metal ball of diameter 4 mm and density

10.5 g / c m^{3}

in dropped in glycerine of density

1.5 g / c m^{3} .

The ball attains a terminal velocity of

8 \mathrm{cm} / \mathrm{sec}

The coefficient of viscosity of glycerine is

Q6PhysicsUnit 7: Properties of Solids and Liquids

A good lubricant should be highly

Q7PhysicsUnit 7: Properties of Solids and Liquids

Due to air a falling body faces a resistive force proportional to square of velocity

v,

consequently its effective downward acceleration is reduced and is given by

a=g-k v^{2}

where

k=

0.002 m^{-1} .

The terminal velocity of the falling body is

(\operatorname{in} \mathrm{m} / \mathrm{s})

Q8PhysicsUnit 7: Properties of Solids and Liquids

The rain drops falling from the sky neither injure us nor make holes on the ground because they move with:

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Frequently asked questions

What makes a Viscosity, Stoke's law, terminal velocity, streamline and turbulent flow, critical velocity question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Properties of Solids and Liquids are high-weightage?

Key areas include Viscosity, Stoke's law, terminal velocity, streamline and turbulent flow, critical velocity. Prioritise these before moving to edge cases.

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Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

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