A ray of light with wavelength λ is incident on three different photoelectric cells namely 1, 2 and 3. The threshold wavelength of these…
RE-NEET 2026 · Medium
Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material. What will be the photoelectric current if…
NEET 2020 · Easy
When two monochromatic lights of frequency and 2 are incident on a photoelectric metal, their stopping potentials become V_s2 and V_s…
NEET 2022 · Medium
A beam of light falls on a metal surface such that photo-electrons are generated. If power of the light source starts to decrease linearly…
RE-NEET 2026 · Easy
A photon and an electron, each of 20 eV energy, move in free space. The ratio of linear momentum of electron p_e to that of photon p_Ph ,…
RE-NEET 2026 · Medium
The work functions of Caesium (Cs), Potassium (K) and Sodium (Na) are 2.14\ eV , 2.30\ eV and 2.75\ eV respectively. If incident…
NEET 2023 · Easy
