Light with a wavelength of \(500\) nm is incident on a metal with a work function of \(2.28\) eV. The de Broglie wavelength of the emitted electron will be:
1. \( <2.8 \times 10^{-10}~\text{m} \)
2. \( <2.8 \times 10^{-9}~\text{m} \)
3. \( \geq 2.8 \times 10^{-9}~\text{m} \)
4. \( <2.8 \times 10^{-12}~\text{m} \)
What will be the percentage change in the de-Broglie wavelength of the particle if the kinetic energy of the particle is increased to \(16\) times its previous value?
1. \(25\)
2. \(75\)
3. \(60\)
4. \(50\)
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. | \(2.7 \times 10^{-21} ~\text{ms}^{-1}\) |