c)
5 Answers
Shaswata Roy
·2013-02-28 05:33:32
Ans - (c)
Since P and Q are dimensionally different,taking their difference is dimensionally wrong.
- Akash Anand Good Work :)
@Shaswat: Try to participate in physics forum too.Upvote·0· Reply ·2013-02-28 21:59:32