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Physics XI Notes

Physics XI Notes

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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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1 min read
Explain why a cyclist bend while going along curved road?

Explain why a cyclist bend while going along curved road?

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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
Transfer of heat- Old is Gold

Transfer of heat- Old is Gold

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1 min read
Reflection at curved mirrors- Old is Gold

Reflection at curved mirrors- Old is Gold

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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
Photometry- Old is Gold

Photometry- Old is Gold

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1 min read
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
Explain why the moon has no atmosphere?

Explain why the moon has no atmosphere?

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1 min read
Heat and Temperature- Old is Gold

Heat and Temperature- Old is Gold

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1 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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1 min read
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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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
Why is it difficult to run fast on sand?

Why is it difficult to run fast on sand?

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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
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
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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1 min read
Explain why spokes are fitted in the cycle wheel.

Explain why spokes are fitted in the cycle wheel.

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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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1 min read
Explain how Newton’s first law of motion follows from the second law.

Explain how Newton’s first law of motion follows from the second law.

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1 min read
Explain why a coin placed on a cardboard covering a glass falls into the glass when the cardboard is pulled to one side?

Explain why a coin placed on a cardboard covering a glass falls into the glass when the cardboard is pulled to one side?

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1 min read
A fan with blades takes longer time to come to rest than without the blades. Why?

A fan with blades takes longer time to come to rest than without the blades. Why?

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1 min read
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
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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Why is Glycerine more viscous than water?

Why is Glycerine more viscous than water?

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1 min read
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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1 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
What are centre of buoyancy and metacentre?

What are centre of buoyancy and metacentre?

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1 min read
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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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
Refraction at plane surfaces- Old is Gold

Refraction at plane surfaces- Old is Gold

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Viscosity-Old is Gold

Viscosity-Old is Gold

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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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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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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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1 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
Refraction through prisms- Old is Gold

Refraction through prisms- Old is Gold

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1 min read
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
Physics XI Questions

Physics XI Questions

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10 min read
The leaves fall when a tree is shaken. Give reason.

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

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1 min read
State the laws of flotation.

State the laws of flotation.

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First law of thermodynamics- Old is Gold

First law of thermodynamics- Old is Gold

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1 min read
Why are roads banked on curved path?

Why are roads banked on curved path?

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1 min read
A solid tied at the end of a string is revolved in vertical. At what point the tension in the string will be the greatest?

A solid tied at the end of a string is revolved in vertical. At what point the tension in the string will be the greatest?

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1 min read
A cork is floating in water. What is the apparent weight of the cork?

A cork is floating in water. What is the apparent weight of the cork?

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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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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
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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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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1 min read
Quantity of Heat- Old is Gold

Quantity of Heat- Old is Gold

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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 do you understand by viscosity?

What do you understand by viscosity?

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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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1 min read
Kinematics-Old is Gold

Kinematics-Old is Gold

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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
Work

Work

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Why does ice float in water?

Why does ice float in water?

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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
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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