MCQOPTIONS
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MCQOPTIONS
| 1. |
Assertion : For making permanent magnets, steel is preferred over soft iron. Reason : As retentivity of steel is smaller. |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | Angular momentum and Planck's constant |
| D. | If the assertion and reason both are false. |
| E. | If assertion is false but reason is true. |
| Answer» C. Angular momentum and Planck's constant | |