Statement I: | The energy of the \(\mathrm{He}^{+}\) ion in \(n=2\) state is same as the energy of H atom in \(n=1\) state |
Statement II: | It is possible to determine simultaneously the exact position and exact momentum of an electron in \(\mathrm{H}\) atom. |
If uncertainty in position and momentum are equal, then the uncertainty in velocity is:
1.
2.
3.
4.
1. 2 x 109 cm s-1
2. 1 x 109 cm s-1
3. 1 x 105 cms-1
4. 1 x 1011 cm s-1
If the mass of electron is 9.11×10-31 kg and the planck's constant is 6.626 ×10-34 Js, then the uncertainty involved in the measurement of velocity within a distance of 0.1 Å is:
1.
2.
3.
4.
Uncertainty in position of a and He is similar. If uncertainty in momentum of is , then uncertainty in momentum of He will be:
1. | 32 × 105 | 2. | 16×105 |
3. | 8 × 105 | 4. | None of the above |