Assertion (A): | Elastomers are used as vibration dampers. |
Reason (R): | Elastomers show elastic hysteresis. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Assertion (A): | The bridges are declared unsafe after long use. |
Reason (R): | The bridges lose their elastic strength with time. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
(a) | Mass \(m\) should be suspended close to wire \(A\) to have equal stresses in both wires. |
(b) | Mass \(m\) should be suspended close to \(B\) to have equal stresses in both wires. |
(c) | Mass \(m\) should be suspended in the middle of the wires to have equal stresses in both wires. |
(d) | Mass \(m\) should be suspended close to wire \(A\) to have equal strain in both wires. |