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Physics XI Notes

Physics XI Notes

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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
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
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
State the laws of flotation.

State the laws of flotation.

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Hygrometry- Old is Gold

Hygrometry- Old is Gold

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Optical instruments- Old is Gold

Optical instruments- Old is Gold

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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 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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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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Explain why spokes are fitted in the cycle wheel.

Explain why spokes are fitted in the cycle wheel.

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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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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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Does a ship sink more in river water or in sea water? Explain.

Does a ship sink more in river water or in sea water? Explain.

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why do we slip on a rainy day?

why do we slip on a rainy day?

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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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Lenses – Old is Gold

Lenses – Old is Gold

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Work

Work

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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 Glycerine more viscous than water?

Why is Glycerine more viscous than water?

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Surface Tension-Old is Gold

Surface Tension-Old is Gold

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How will you justify that stone is more rigid than iron?

How will you justify that stone is more rigid than iron?

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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
NEB Model Question for Physics – Class 11

NEB Model Question for Physics – Class 11

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

Why bridges are declared unsafe after a long use?

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1 min read
Refraction through prisms- Old is Gold

Refraction through prisms- Old is Gold

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Quantity of Heat- Old is Gold

Quantity of Heat- Old is Gold

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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 min read
Explain why the moon has no atmosphere?

Explain why the moon has no atmosphere?

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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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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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Explain why a cyclist bend while going along curved road?

Explain why a cyclist bend while going along curved road?

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What are centre of buoyancy and metacentre?

What are centre of buoyancy and metacentre?

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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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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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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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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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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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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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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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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
Physics XI Questions

Physics XI Questions

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10 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
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
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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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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Thermal Properties of Matter- Old is Gold

Thermal Properties of Matter- 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 it difficult to run fast on sand?

Why is it difficult to run fast on sand?

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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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Capacitance and dielectrics- Old is Gold

Capacitance and dielectrics- Old is Gold

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Why are roads banked on curved path?

Why are roads banked on curved path?

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Viscosity-Old is Gold

Viscosity-Old is Gold

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What do you understand by viscosity?

What do you understand by viscosity?

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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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Photometry- Old is Gold

Photometry- Old is Gold

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First law of thermodynamics- Old is Gold

First law of thermodynamics- Old is Gold

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Dispersion- Old is Gold

Dispersion- Old is Gold

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1. State Newton’s Second Law of Motion.

1. State Newton’s Second Law of Motion.

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Kinematics-Old is Gold

Kinematics-Old is Gold

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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
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