Assertion (A): | Soft steel can be made red hot by continued hammering on it, but hard steel cannot. |
Reason (R): | Energy transfer in the case of soft is large as in hard steel. |
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. | (A) is False but (R) is True. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion (A): | Identical springs of steel and copper are equally stretched. More work will be done on the steel spring. |
Reason (R): | Steel is more elastic than copper. |
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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology