JEE Main Physics question
The area of cross-section of a steel wire () is . The force required to double its length will be [MP PET 2002, Similar MP PMT 1987, Similar MP PMT 1989]
Answer: (D)
Solution
Doubling the length means strain . .
The area of cross-section of a steel wire () is . The force required to double its length will be [MP PET 2002, Similar MP PMT 1987, Similar MP PMT 1989]
Doubling the length means strain . .