Physicsquestions

Physics XI Notes for Physics Notes

Aug 18 '13

Units in different systems

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Physics XI Notes for Physics Notes

Aug 18 '13

Heat and Temperature- Old is Gold

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Physics XI Notes for Physics Notes

Aug 18 '13

Quantity of Heat- Old is Gold

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Physics XI Notes for Physics Notes

Aug 18 '13

Electrostatics- Old is Gold

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Physics XI Notes for Physics Notes

Aug 18 '13

Second Law of Thermodynamics- Old is Gold

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Physics XI Notes for Physics Notes

Aug 18 '13

First law of thermodynamics- Old is Gold

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Physics XI Notes for Physics Notes

Aug 18 '13

Optical instruments- Old is Gold

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Physics XI Notes for Physics Notes

Aug 18 '13

Surface Tension-Old is Gold

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Physics XI Notes for Physics Notes

Aug 18 '13

Reflection at curved mirrors- Old is Gold

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Physics XI Notes for Physics Notes

Aug 18 '13

What are the drawbacks of simple pendulum?

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Physics XI Notes for Physics Notes

Aug 18 '13

Why is the bottom of a ship made heavy?

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Physics XI Notes for Physics Notes

Aug 18 '13

Steel balls sink in water but they don’t sink in mercury. Why?

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Physics XI Notes for Physics Notes

Aug 18 '13

What are centre of buoyancy and metacentre?

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Physics XI Notes for Physics Notes

Aug 18 '13

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

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Physics XI Notes for Physics Notes

Aug 18 '13

Why is easier to lift a body in a liquid than in air?

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Physics XI Notes for Physics Notes

Aug 18 '13

A pendulum clock is taken to moon. Will it gain or lose time?

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Physics XI Notes for Physics Notes

Aug 18 '13

A helium filled balloon rises to a certain height and then halts. Why?

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Physics XI Notes for Physics Notes

Aug 18 '13

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

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Physics XI Notes for Physics Notes

Aug 18 '13

How will you make difference between density and specific gravity of a body?

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Physics XI Notes for Physics Notes

Aug 18 '13

If a cork is released from the bottom of a jar filled with water, what will happen and why?

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Physics XI Notes for Physics Notes

Aug 18 '13

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

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Physics XI Notes for Physics Notes

Aug 18 '13

A body is moving in a circular path with constant speed. Is this motion a simple harmonic?

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Physics XI Notes for Physics Notes

Aug 18 '13

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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Physics XI Notes for Physics Notes

Aug 18 '13

Why is a horse more stable than a man?

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Physics XI Notes for Physics Notes

Aug 18 '13

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

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Physics XI Notes for Physics Notes

Aug 18 '13

Why a wrench of longer arm is preferred in comparison to a wrench of short arm?

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Physics XI Notes for Physics Notes

Aug 18 '13

Explain why a man carrying a load on his back leans forward?

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Physics XI Notes for Physics Notes

Aug 18 '13

During pregnancy, woman often develop back pains from leaning backward while walking. Why do they have to walk this way?

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Physics XI Notes for Physics Notes

Aug 18 '13

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

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Physics XI Notes for Physics Notes

Aug 18 '13

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

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Physics XI Notes for Physics Notes

Aug 18 '13

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

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Physics XI Notes for Physics Notes

Aug 18 '13

Explain why spokes are fitted in the cycle wheel.

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Physics XI Notes for Physics Notes

Aug 18 '13

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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Physics XI Notes for Physics Notes

Aug 18 '13

A rigid, lighter than air balloon filled with Helium cannot continue to rise indefinitely. Why?

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Physics XI Notes for Physics Notes

Aug 18 '13

Why bridges are declared unsafe after a long use?

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Physics XI Notes for Physics Notes

Aug 18 '13

Explain which one is more elastic- rubber or steel.

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Physics XI Notes for Physics Notes

Aug 18 '13

If a pendulum clock is taken to a mountain top, does it gain or lose time?

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Physics XI Notes for Physics Notes

Aug 18 '13

On what factors does the time period of a simple pendulum depend?

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Physics XI Notes for Physics Notes

Aug 18 '13

Why an astronaut in a space capsule orbiting the earth experiences a feeling of weightlessness?

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Physics XI Notes for Physics Notes

Aug 18 '13

The weight of a body is less inside the earth than on the surface. Explain.

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Physics XI Notes for Physics Notes

Aug 18 '13

What will happen to the value of ‘g’ if the earth stops rotating?

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Physics XI Notes for Physics Notes

Aug 18 '13

Explain why the moon has no atmosphere?

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Physics XI Notes for Physics Notes

Aug 18 '13

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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Physics XI Notes for Physics Notes

Aug 18 '13

Is it possible for a solid body to have no matter at it centre of gravity?

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Physics XI Notes for Physics Notes

Aug 18 '13

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 Notes for Physics Notes

Aug 18 '13

How does K.E. of an object change if its momentum is doubled?

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Physics XI Notes for Physics Notes

Aug 18 '13

Explain why a cyclist bend while going along curved road?

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Physics XI Notes for Physics Notes

Aug 18 '13

Why are roads banked on curved path?

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Physics XI Notes for Physics Notes

Aug 18 '13

Distinguish between conservative and non-conservative force.

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Physics XI Notes for Physics Notes

Aug 18 '13

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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Physics XI Notes for Physics Notes

Aug 18 '13

Differentiate between conservation of kinetic energy and conservation of linear momentum.

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Physics XI Notes for Physics Notes

Aug 18 '13

When a bus takes a turn, passengers are thrown away from the centre of the curved path. Why?

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Physics XI Notes for Physics Notes

Aug 18 '13

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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Physics XI Notes for Physics Notes

Aug 18 '13

Why is the kinetic friction less than the limiting friction?

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Physics XI Notes for Physics Notes

Aug 18 '13

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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Physics XI Notes for Physics Notes

Aug 18 '13

Why is it easy to pull a lawn roller than to push it?

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Physics XI Notes for Physics Notes

Aug 18 '13

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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Physics XI Notes for Physics Notes

Aug 18 '13

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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Physics XI Notes for Physics Notes

Aug 18 '13

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

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Physics XI Notes for Physics Notes

Aug 18 '13

Kinematics-Old is Gold

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