1.
The ratio of the energy of a photon with λ = 150 nm to that with λ = 300 nm is-
2.
The following graph shows the variation of photocurrent for a photosensitive metal. Choose the correct statement.
3.
What is the de-Broglie wavelength associated with an electron accelerated through a potential difference of 900 V?
4.
In photoelectric effect, the photocurrent-
5.
If the de-Broglie wavelengths for a proton and an alpha particle are equal, then the ratio of their velocities will be-
7.
Which of the following figures represent the variation of particle momentum and the associated de-Broglie wavelength?
8.
The maximum kinetic energy of the photoelectrons varies-
9.
The graph of kinetic energy of emitted electron with frequency of incident radiation is plotted as shown in figure. The slope of the graph is-
10.
If light of wavelength 412.5 nm is incident on each of the metals given below, which ones will show photoelectric emission?
Metal | Work Function (eV) |
Na | 1.92 |
K | 2.15 |
Ca | 3.20 |
Mo | 4.17 |