Physics Elasticity Question 85
Question: A force F is needed to break a copper wire having radius R. The force needed to break a copper wire of radius 2R will be
[MP PET 1990]
Options:
A) F/2
B) 2F
C) 4F
D) F/4
Show Answer
Answer:
Correct Answer: C
Solution:
Breaking Force µ Area of cross section of wire (pr2) If radius of wire is double then breaking force will become four times.
BETA
