List of top Chemistry Questions on Photoelectric Effect asked in KEAM

The threshold frequency of a metal corresponds to the wavelength of \(x\) nm. In two separate experiments ‘A’ and ‘B’, incident radiations of wavelengths \(\frac{x}{2}\) nm and \(\frac{x}{4}\) nm respectively are used. The ratio of kinetic energy of the released electrons in experiment ‘B’ to that in experiment ‘A’ is
The work function of a metal is 5 eV. What is the kinetic energy of the photoelectron ejected from the metal surface if the energy of the incident radiation is 6.2 eV? ($1 \text{ eV} = 1.6 \times 10^{-19} \text{ J}$)
A 250 W electric bulb of 80% efficiency emits a light of 6626 \AA wavelength. The number of photons emitted per second by the lamp is ($h = 6.626 \times 10^{-34}$ Js)
A 250 W electric bulb of 80% efficiency emits a light of 6626 \AA wavelength. The number of photons emitted per second by the lamp is ($h = 6.626 \times 10^{-34}$ Js)
The work function of a metal is 5 eV. What is the kinetic energy of the photoelectron ejected from the metal surface if the energy of the incident radiation is 6.2 eV? ($1 \text{ eV} = 1.6 \times 10^{-19} \text{ J}$)
A 250 W electric bulb of 80% efficiency emits a light of 6626 \AA wavelength. The number of photons emitted per second by the lamp is ($h = 6.626 \times 10^{-34}$ Js)
The work function of a metal is 5 eV. What is the kinetic energy of the photoelectron ejected from the metal surface if the energy of the incident radiation is 6.2 eV? ($1 \text{ eV} = 1.6 \times 10^{-19} \text{ J}$)