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Physics XI Notes

Physics XI Notes

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Transfer of heat- Old is Gold

Transfer of heat- 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
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
Refraction through prisms- Old is Gold

Refraction through prisms- Old is Gold

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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
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
Optical instruments- Old is Gold

Optical instruments- 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
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
Viscosity-Old is Gold

Viscosity-Old is Gold

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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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1 min read
Units in different systems

Units in different systems

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3 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
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
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
Thermal Properties of Matter- Old is Gold

Thermal Properties of Matter- Old is Gold

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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 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
Heat and Temperature- Old is Gold

Heat and Temperature- Old is Gold

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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
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
Work

Work

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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
NEB Model Question for Physics – Class 11

NEB Model Question for Physics – Class 11

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4 min read
Refraction at plane surfaces- Old is Gold

Refraction at plane surfaces- Old is Gold

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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
First law of thermodynamics- Old is Gold

First law of thermodynamics- 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
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
Capacitance and dielectrics- Old is Gold

Capacitance and dielectrics- 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
Why is Glycerine more viscous than water?

Why is Glycerine more viscous than water?

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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
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
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 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
1. State Newton’s Second Law of Motion.

1. State Newton’s Second Law of Motion.

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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
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
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 why spokes are fitted in the cycle wheel.

Explain why spokes are fitted in the cycle wheel.

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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
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
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
State the laws of flotation.

State the laws of flotation.

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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
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
Kinematics-Old is Gold

Kinematics-Old is Gold

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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
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
Physics XI Questions

Physics XI Questions

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10 min read
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 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
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
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
Electrostatics- Old is Gold

Electrostatics- Old is Gold

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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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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 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
Is friction a necessary evil? Explain.

Is friction a necessary evil? Explain.

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1 min read
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