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प्रश्न
Give an example
Light energy changes to electrical energy.
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उत्तर
Solar cell
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संबंधित प्रश्न
The S.I. unit of energy is .............
State the S.I. unit of work and define it.
The work done by a force acting obliquely is given by the formula : W = F cos θ ✕ s. What will happen to the work done if angle θ between the direction of force and motion of the body is increased gradually? Will it increase, decrease or remain constant.
What should be the angle between the direction of force and the direction of motion of a body so that the work done is zero?
Nm is the unit of .......
Define Translational motion.
In what way does an ‘Ideal machine’ differ from a ‘Practical machine’?
A bucketful of water is to be drawn from a well ______ will be done when a ______ is applied to do this because there will be a ______ of water.
(displacement, work, force)
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
An engine is pulling a train.
