When work is done on a body by an external force, it's...........

Only kinetic energy increases

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Only potential energy increases.

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Both kinetic and potential energies may increase

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Sum of kinetic and potential energy decrease?

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Solution

The correct option is C Both kinetic and potential energies may increase
$Explanation:-$

An external force can change the kinetic energy or potential energy of an object without doing work on the object- that is, without transferring energy to the object. Instead,the force is responsible for transfers of energy from one type to another inside the object.

Therefore Both kinetic and potential energies may increase.

$Hence the correct option is C$

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Similar questions

Q. Assertion :If work done by conservative forces is positive, kinetic energy will increase. Reason: Here potential energy will decrease.

When is work done equal to kinetic energy and when is it equal to potential energy?

(a) Work is said to be done by a force only when _________

(b) Work done = Force $\times$ _________

(d) The S.I. unit of energy is ______

(e) The potential energy of a body is due to its ______ and kinetic energy of body is due to its ______

(f) Gravitational potential energy U = mass $\times$ force of gravity on unit mass $\times$ _________

(g) Kinetic energy = $\frac{1}{2} \times m a s s \times$ _________

(h) Power P = ______ / time taken.

(i) The S. I. unit of power is ______

(j) 1 H.P. = ______ W

Q. Identify the wrong statement among the following. Rewrite them by making necessary corrections.
a) Work and energy have different units.
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c) The potential energy of spring increases when it is extended and decreases when it is compressed.
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Question 9
A body is falling from a height h, after it has fallen a height $\frac{h}{2}$ , it will possess

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