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Physics GK · all questions

Work, Energy and Power
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Rate of doing work is called?

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A photoelectric cell converts

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Force/acceleration?

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The work done by an object is 56 J and applied force on object is 7 N. Find the displacement.

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Which of the following is the effect of balanced force applied on an object?

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The mass of an object is 85 kg and the velocity is 60 ms-1. Find the momentum of the object.

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A person does 1000J of work in 2s. What was the energy he spent?

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In the correct of Ocean Energy Conversion, 'T' in OTEC stands for

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If an object not moving after applying a force, then we can say that-

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What will be the mass of the girl weighing 450 N?

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An object of mass 10 kg is moving with a velocity of 2 ms-1. The momentum contained in the object is-

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If the velocity of an object moving at a certain height is increase 4 times, then what will be the change in the potential energy of the object?

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Which of the following statement regarding energy is not true?

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If the speed of the cycle is doubled then the kinetic energy will be?

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Power = , what is the meaning of W?

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If the velocity of an object becomes twice that of its initial velocity, then its kinetic energy become n times of its initial kinetic energy. Then what would be the value of n?

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Which energy of the wind does a windmill use?

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Inertia of an object is measured in which of the following?

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Which of the following is not an example of work done?

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A cube of mass 0.5 kg is moving at a speed of 2.0 m/s on a smooth surface. It collides with another object of 1.0 kg and both move together as a single object. What will be the energy loss during the collision?

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