An object a mass 1 kg is raised through a height `h’ from the ground. Its potential energy is increased by 1 J. Find the height `h’ .(take $g = 9.8 m / s^{2}$ )

0.402 m

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0.305 m

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0.230 m

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0.110 m

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Solution

The correct option is D
0.110 m

Let the mass of the object be m
Now, change in potential energy = 1 J
or, $m g h = 1 J$
or $1 \times 9.8 \times h = 1 J$
or, $h = \frac{1}{9.8} = 0.102 m$

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