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Physics XI Notes

Physics XI Notes

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If a cork is released from the bottom of a jar filled with water, what will happen and why?

If a cork is released from the bottom of a jar filled with water, what will happen and why?

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1 min read
Why is a cow more stable than a man?

Why is a cow more stable than a man?

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1 min read
NEB Model Question for Physics – Class 11

NEB Model Question for Physics – Class 11

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4 min read
Hygrometry- Old is Gold

Hygrometry- Old is Gold

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1 min read
Why is the kinetic friction less than the limiting friction?

Why is the kinetic friction less than the limiting friction?

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1 min read
Can a body be regarded in a state of rest as well as in motion at the same time? Give an example.

Can a body be regarded in a state of rest as well as in motion at the same time? Give an example.

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1 min read
The earth moving round the sun actes upon by a force, the work on earth by this force. Do you agree with this statement?

The earth moving round the sun actes upon by a force, the work on earth by this force. Do you agree with this statement?

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1 min read
When a heavy truck collides with a car, the occupants of car are more likely to be hurt than the truck driver. Why?

When a heavy truck collides with a car, the occupants of car are more likely to be hurt than the truck driver. Why?

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1 min read
Electrostatics- Old is Gold

Electrostatics- Old is Gold

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Explain why the moon has no atmosphere?

Explain why the moon has no atmosphere?

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Suppose two forces act on rigid body and two forces have same magnitude but opposite direction. what conditions the body rotate?

Suppose two forces act on rigid body and two forces have same magnitude but opposite direction. what conditions the body rotate?

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Why is Glycerine more viscous than water?

Why is Glycerine more viscous than water?

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A rigid, lighter than air balloon filled with Helium cannot continue to rise indefinitely. Why?

A rigid, lighter than air balloon filled with Helium cannot continue to rise indefinitely. Why?

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1 min read
Transfer of heat- Old is Gold

Transfer of heat- Old is Gold

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Why does ice float in water?

Why does ice float in water?

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Is it possible for a solid body to have no matter at it centre of gravity?

Is it possible for a solid body to have no matter at it centre of gravity?

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Steel balls sink in water but they don’t sink in mercury. Why?

Steel balls sink in water but they don’t sink in mercury. Why?

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If a pendulum clock is taken to a mountain top, does it gain or lose time?

If a pendulum clock is taken to a mountain top, does it gain or lose time?

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1 min read
Why is a horse more stable than a man?

Why is a horse more stable than a man?

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1 min read
Differentiate between conservation of kinetic energy and conservation of linear momentum.

Differentiate between conservation of kinetic energy and conservation of linear momentum.

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When a bus takes a turn, passengers are thrown away from the centre of the curved path. Why?

When a bus takes a turn, passengers are thrown away from the centre of the curved path. Why?

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Explain why a man carrying a load on his back leans forward?

Explain why a man carrying a load on his back leans forward?

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1 min read
If a moving bullet striking a block of wood on a frictionless table embeds inside it what happens to the KE of the bullet?

If a moving bullet striking a block of wood on a frictionless table embeds inside it what happens to the KE of the bullet?

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1 min read
Quantity of Heat- Old is Gold

Quantity of Heat- Old is Gold

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1 min read
What is meant by the moment of a couple?

What is meant by the moment of a couple?

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What is the difference between centre of gravity and centre of mass of a system?

What is the difference between centre of gravity and centre of mass of a system?

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Why is it easy to pull a lawn roller than to push it?

Why is it easy to pull a lawn roller than to push it?

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1 min read
What are the drawbacks of simple pendulum?

What are the drawbacks of simple pendulum?

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Can a body be in equilibrium if it is in motion? Explain.

Can a body be in equilibrium if it is in motion? Explain.

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How will you make difference between density and specific gravity of a body?

How will you make difference between density and specific gravity of a body?

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1 min read
Units in different systems

Units in different systems

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3 min read
State the laws of flotation.

State the laws of flotation.

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Why an astronaut in a space capsule orbiting the earth experiences a feeling of weightlessness?

Why an astronaut in a space capsule orbiting the earth experiences a feeling of weightlessness?

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Capacitance and dielectrics- Old is Gold

Capacitance and dielectrics- Old is Gold

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Why a wrench of longer arm is preferred in comparison to a wrench of short arm?

Why a wrench of longer arm is preferred in comparison to a wrench of short arm?

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1 min read
In a siphon, water is lifted above its level during flow from container to another, where does it needed potential energy from?

In a siphon, water is lifted above its level during flow from container to another, where does it needed potential energy from?

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1 min read
What are centre of buoyancy and metacentre?

What are centre of buoyancy and metacentre?

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What do you understand by viscosity?

What do you understand by viscosity?

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Heat and Temperature- Old is Gold

Heat and Temperature- Old is Gold

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What will happen to the value of ‘g’ if the earth stops rotating?

What will happen to the value of ‘g’ if the earth stops rotating?

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1 min read
A pendulum clock is taken to moon. Will it gain or lose time?

A pendulum clock is taken to moon. Will it gain or lose time?

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1 min read
2. If action and reaction are always equal and opposite, why don’t they always cancel each other?

2. If action and reaction are always equal and opposite, why don’t they always cancel each other?

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Refraction at plane surfaces- Old is Gold

Refraction at plane surfaces- Old is Gold

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During pregnancy, woman often develop back pains from leaning backward while walking. Why do they have to walk this way?

During pregnancy, woman often develop back pains from leaning backward while walking. Why do they have to walk this way?

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Explain which one is more elastic- rubber or steel.

Explain which one is more elastic- rubber or steel.

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1 min read
Work

Work

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Kinematics-Old is Gold

Kinematics-Old is Gold

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A helium filled balloon rises to a certain height and then halts. Why?

A helium filled balloon rises to a certain height and then halts. Why?

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Thermal Properties of Matter- Old is Gold

Thermal Properties of Matter- Old is Gold

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Physics XI Questions

Physics XI Questions

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10 min read
Viscosity-Old is Gold

Viscosity-Old is Gold

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If the sun somehow collapsed to form a black hole, what effect would this event have on the orbit of the earth?

If the sun somehow collapsed to form a black hole, what effect would this event have on the orbit of the earth?

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1 min read
The weight of a body is less inside the earth than on the surface. Explain.

The weight of a body is less inside the earth than on the surface. Explain.

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1 min read
Distinguish between conservative and non-conservative force.

Distinguish between conservative and non-conservative force.

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A body is moving in a circular path with constant speed. Is this motion a simple harmonic?

A body is moving in a circular path with constant speed. Is this motion a simple harmonic?

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1 min read
Why bridges are declared unsafe after a long use?

Why bridges are declared unsafe after a long use?

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Why is easier to lift a body in a liquid than in air?

Why is easier to lift a body in a liquid than in air?

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Dispersion- Old is Gold

Dispersion- Old is Gold

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On what factors does the time period of a simple pendulum depend?

On what factors does the time period of a simple pendulum depend?

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1 min read
First law of thermodynamics- Old is Gold

First law of thermodynamics- Old is Gold

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1 min read
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