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Question

If potential energy of a satellite is U. Then energy needed to escape it is:

A
U2
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B
U
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C
U
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D
-U2
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Solution

The correct option is A U2
As we know that the energy required to escape a satellite is the half of its potential energy and here potential energy of satellite is U.

So from this we can clearly say that option 'A' is correct


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