Question

Two different types of rubber are found to have the stess-strain curve as shown:
(i) to absorb vibrations one would prefer rubber $A$
(ii) For manufacturing car Tyre one would prefer $B$

• A. I and II both are True
• B. I is True, II is False
• C. I is False, II is True
• D. I and II both are False

Answer 1

Answer: (D)

I and II both are False

$\left(i\right)$ We should use rubber $B$ to absorb vibrations of the machinery. It is because of larger area of the curve that greater amount of vibrational energy can be dissipated.

$\left(ii\right)$ We should use rubber $A$ for making car tyres. Because the work done in case rubber A is lesser (lesser area of the curve), hence the car tyres of this rubber will not get excessively heated.

Hence, option D is correct.