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Question

By stretching the rubber strings of a catapult we store .......... energy in it.

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A
potential
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B
electrical
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C
heat
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D
kinetic
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Solution

The correct option is C potential
Answer: Potential Energy
The energy exerted or work done by our muscles on the rubber band is consumed in changing its shape. It gets stored in the stretched rubber band as its potential energy. It is this stored energy that is used by the rubber band to move to its original state, shape, and size. When the rubber band is released, this stored potential energy gets converted into kinetic energy.
If a pebble is placed in contact with the stretched rubber band, this kinetic energy is transferred to the pebble. This kinetic energy of the pebble is enough to do some destructive work, like breaking a glass window, injuring someone, etc.

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