Here's an even better idea... Don't respond to a question unless you have something constructive to add to it. If you can't help with a question, just move on to the next one.Here's an idea....why don't you ask your teacher...if he/she gave you the question ( doubtful) OR ask the "teacher" at your coaching college who gave you the question.
Quite the hilarious person.Bully for you.
You obviously are quite unfamiliar with the physics syllabus, because if you did you would realise that this is an out of syllabus question, as gravitational potential is not in syllabus.
That's why I treated the question with scorn.....time wasters.
And I will respond as I see fit....