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प्रश्न
Tick the most appropriate answer.
The force applied on a machine to do work is called the
विकल्प
load
effort
efficiency
fulcrum
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उत्तर
effort
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संबंधित प्रश्न
Fill in the blank
The ability to do work is called ______
Select the correct alternatives
When a bulb lights up on passing current, the change of energy is
Define the term efficiency of a machine.
Answer the following in a word or two or in a sentence.
Write the formula for calculating the efficiency of a machine.
A cell converts one form of energy into another form. Name the two forms.
If the energy of a ball falling from a height of 10 metres is reduced by 40%, how high will it rebound?
Find out the form of energy possessed by the following thing.
A rock on the top of a hill
What energy transfer happen in a car engine?
The work done on an object does not depend upon the
A ball is dropped from a height of 10 m. If the energy of the ball reduces by 40% after striking the ground, how much high can the ball bounce back? (g = 10 m s–2)
