1. | \(1~\mathring{A}\) | 2. | \(0.1~\mathring{A}\) |
3. | \(10~\mathring{A}\) | 4. | \(0.01~\mathring{A}\) |
1. | \(2.4\) V | 2. | \(-1.2\) V |
3. | \(-2.4\) V | 4. | \(1.2\) V |
1. | \(N\) and \(2T\) | 2. | \(2N\) and \(T\) |
3. | \(2N\) and \(2T\) | 4. | \(N\) and \(T\) |
1. | \(2.7 \times 10^{-18} ~\text{ms}^{-1}\) |
2. | \(9 \times 10^{-2} ~\text{ms}^{-1}\) |
3. | \(3 \times 10^{-31}~\text{ms}^{-1}\) |
4. | \(2.7 \times 10^{-21} ~\text{ms}^{-1}\) |
Waves are associated with matter only:
1. | When it is stationary. |
2. | When it is in motion with the velocity of light only. |
3. | When it is in motion with any velocity. |
4. | None of the above. |
1. | Equal to \(c\), the speed of light in vacuum. |
2. | Greater than \(c\). |
3. | Less than \(c\). |
4. | Tending to infinity. |
If the de-Broglie wavelengths for a proton and an alpha-particle are equal, then the ratio of their velocities will be:
1. \(4:1\)
2. \(2:1\)
3. \(1:2\)
4. \(1:4\)