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Physics XI Notes

Physics XI Notes

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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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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
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
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
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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1 min read
What do you mean by geo-stationary satellite? Explain?

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

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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
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
Transfer of heat- Old is Gold

Transfer of heat- Old is Gold

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1 min read
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
Heat and Temperature- Old is Gold

Heat and Temperature- Old is Gold

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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
Thermal Properties of Matter- Old is Gold

Thermal Properties of Matter- Old is Gold

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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
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
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
Physics XI Questions

Physics XI Questions

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10 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
Second Law of Thermodynamics- Old is Gold

Second Law of Thermodynamics- Old is Gold

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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
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
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
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
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
Kinematics-Old is Gold

Kinematics-Old is Gold

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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
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
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
Viscosity-Old is Gold

Viscosity-Old is Gold

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1 min read
Why is the bottom of a ship made heavy?

Why is the bottom of a ship made heavy?

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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
What is meant by elastic and inelastic collision?

What is meant by elastic and inelastic collision?

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

What are centre of buoyancy and metacentre?

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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
Refraction at plane surfaces- Old is Gold

Refraction at plane surfaces- Old is Gold

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

Distinguish between conservative and non-conservative force.

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1 min read
Units in different systems

Units in different systems

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3 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
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
Is friction a necessary evil? Explain.

Is friction a necessary evil? Explain.

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1 min read
What is the counterpart of the mass and force in rotational motion?

What is the counterpart of the mass and force in rotational motion?

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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 do you understand by viscosity?

What do you understand by viscosity?

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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
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
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
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
Photometry- Old is Gold

Photometry- Old is Gold

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1 min read
Lenses – Old is Gold

Lenses – Old is Gold

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1 min read
Why is Glycerine more viscous than water?

Why is Glycerine more viscous than water?

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1 min read
Why does ice float in water?

Why does ice float in water?

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1 min read
Optical instruments- Old is Gold

Optical instruments- Old is Gold

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1 min read
1. State Newton’s Second Law of Motion.

1. State Newton’s Second Law of Motion.

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1 min read
State the laws of flotation.

State the laws of flotation.

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1 min read
Hygrometry- Old is Gold

Hygrometry- Old is Gold

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1 min read
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