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Define and explain work. Name the unit in which work is measured. Define the unit also.

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If a body does 12000 joule work in 12 seconds .find its power.

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Define force of gravitation. Also define and explain law of gravitation?

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How can you determine the mass of earth by gravitational force?

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Find the centre of gravity of an irregular shaped thin lamina?

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What do you know about resolution of force . explain it.

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What do you know about mass energy equation . Explain?

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What are the main sources of energy . Explain each one?

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What do you know about gravitational field? Explain.

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What do you mean by renewable energy sources? explain

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If vector A and B are added, under what condition their resultant magnitude is A+B and under what condition resultant is zero?

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Define three states of equilibrium with the help of examples.

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Define energy explain the various form of energy?

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Can you determine the mass of moon?

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What will be the potential energy of a body off mass m at height h?

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Define law of conservation of energy . Explain it with the help of examples?

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What is the relation of energy with environment explain?

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Define equilibrium .explain the second condition for equilibrium with examples?

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A screw gauge has 50 divisions on its circular scale. The pitch of the screw gauge is 0.5mm. What is its least count.

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Name the branches of physics having commonly concepts.

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