MCQOPTIONS
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MCQOPTIONS
| 1. |
The ratio of the speed of the electron in the first Bohr orbit of hydrogen and the speed of light is equal to (where e, h and c have their usual meanings) [MP PMT 2000] |
| A. | \[2\pi hc/{{e}^{2}}\] |
| B. | \[{{e}^{2}}h/2\pi c\] |
| C. | \[{{e}^{2}}c/2\pi h\] |
| D. | \[2\pi {{e}^{2}}/hc\] |
| Answer» E. | |