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| Q. |
The unit of Planck's constant is – |
| A. | Js |
| B. | Js⁻² |
| C. | J/s |
| D. | Js² |
| Answer» A. Js | |
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Explanation: The Planck constant has dimensions of physical action; these are the same as those of angular momentum, i.e., energy multiplied by time, or momentum multiplied by distance. |
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