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Question (11)
QN0035205

If the extension in a spring is increased to 4 times then the potential energy

  • (A)

    remains the same

  • (B)

    becomes 4 times

  • (C)

    becomes one fourth

  • (D)

    becomes 16 times

Correct Answer: D
Explanation:

P.E.

If , then

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Question (12)
QN0035206

A long string is stretched by  and the potential energy is . If the spring is stretched by , its potential energy will be

  • (A)

  • (B)

  • (C)

  • (D)

Correct Answer: D
Explanation:

or

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