Q. 42 | The wavelength of light emitted in the visible region by He+ ions after collisions with H atoms is | |||
1. | 6.5 × 10-7 m | |||
2. | 5.6 × 10-7 m | |||
3. | 4.8 × 10-7 m | |||
4. | 4.0 × 10-7 m | |||
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Q. 43 | The ratio of the kinetic energy of the n = 2 electron for the H atom to that of He+ ion is | |
1. | ![]() | |
2. | ![]() | |
3. | 1 | |
4. | 2 | |