Potential energy in a spring when stretched by 2 cm is U. Its potential energy, when stretched by 10 cm is :

Options

A. `U/25`
B. `U/5`
C. `25U`
D. `5U`

Answer

C

Explanation

Since potential energy
`" "U propto x^(2)`
Therefore, new potential energy = `5^(2)U=25U`.