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Physics XI Notes

Physics XI Notes

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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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1 min read
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
Viscosity-Old is Gold

Viscosity-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
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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1 min read
3. Explain why a cricketer moves his hands backwards while catching ball?

3. Explain why a cricketer moves his hands backwards while catching ball?

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1 min read
State the laws of flotation.

State the laws of flotation.

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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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Why is Glycerine more viscous than water?

Why is Glycerine more viscous than water?

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Why is a cow more stable than a man?

Why is a cow more stable than a man?

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why do we slip on a rainy day?

why do we slip on a rainy day?

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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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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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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. State Newton’s Second Law of Motion.

1. State Newton’s Second Law of Motion.

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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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Hygrometry- Old is Gold

Hygrometry- Old is Gold

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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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Transfer of heat- Old is Gold

Transfer of heat- Old is Gold

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Photometry- Old is Gold

Photometry- Old is Gold

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What do you understand by viscosity?

What do you understand by viscosity?

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What is meant by the moment of a couple?

What is meant by the moment of a couple?

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Kinematics-Old is Gold

Kinematics-Old is Gold

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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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Lenses – Old is Gold

Lenses – Old is Gold

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Refraction through prisms- Old is Gold

Refraction through prisms- Old is Gold

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Why is the bottom of a ship made heavy?

Why is the bottom of a ship made heavy?

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Why is it difficult to run fast on sand?

Why is it difficult to run fast on sand?

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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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1 min read
Units in different systems

Units in different systems

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3 min read
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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Physics XI Questions

Physics XI Questions

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10 min read
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
How does ‘g’ at a point vary with distance from the centre of the earth? Where is the highest value of ‘g’? Explain.

How does ‘g’ at a point vary with distance from the centre of the earth? Where is the highest value of ‘g’? Explain.

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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
A dancer girl is rotating over a turntable with her arms outstretched. If she lowers her arms how does this affect her motion?

A dancer girl is rotating over a turntable with her arms outstretched. If she lowers her arms how does this affect her motion?

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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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Dispersion- Old is Gold

Dispersion- Old is Gold

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Thermal Properties of Matter- Old is Gold

Thermal Properties of Matter- Old is Gold

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Work

Work

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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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Is friction a necessary evil? Explain.

Is friction a necessary evil? Explain.

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Explain why the moon has no atmosphere?

Explain why the moon has no atmosphere?

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A man carrying a bucket of water on his hand always leans to the opposite side. Explain.

A man carrying a bucket of water on his hand always leans to the opposite side. Explain.

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What do you mean by geo-stationary satellite? Explain?

What do you mean by geo-stationary satellite? Explain?

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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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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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Quantity of Heat- Old is Gold

Quantity of Heat- Old is Gold

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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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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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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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The leaves fall when a tree is shaken. Give reason.

The leaves fall when a tree is shaken. Give reason.

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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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Refraction at plane surfaces- Old is Gold

Refraction at plane surfaces- Old is Gold

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What is meant by elastic and inelastic collision?

What is meant by elastic and inelastic collision?

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Why is the kinetic friction less than the limiting friction?

Why is the kinetic friction less than the limiting friction?

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Optical instruments- Old is Gold

Optical instruments- Old is Gold

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Explain why a cyclist bend while going along curved road?

Explain why a cyclist bend while going along curved road?

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Why does ice float in water?

Why does ice float in water?

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If the earth is struck by meteorites, the earth will slow down slightly. Why?

If the earth is struck by meteorites, the earth will slow down slightly. Why?

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