The figure shows the variation of potential energy of a particle as a funcation of x, the x-coordinate of the region. It has been assumed that potential energy depends only on `x`. For all other values `x, U` is zero. i.e. for` x lt - 10` and `x gt 15, U = 0`.

If total mechanical energy of the particle is `-40J`, then it can be found in region.

Options

A. (a) `xlarr10` and `xgt15`
B. (b) `-10ltxlarr5` and `6ltxlt15`
C. (c) `10ltxlt15`
D. (d) It is not possible

Answer

D

Explanation

The concept is same as above.
If `E=-40J`, `K=-40-U`.
It means `Ularr40` for K to be positive, but from given variations, it is clear that minimum, value of `U` is `-35J`. So this is not possible.