Given below are two statements: Statement I: Out of microwaves… | JEE Main 2023 (13 Apr, Shift 2)

Q45JEE Main 2023 · 13 APR · SHIFT 2Medium

Photoelectric Experiment: Intensity, Stopping Potential & Graphs

Given below are two statements:

Statement I: Out of microwaves, infrared rays and ultraviolet rays, ultraviolet rays are the most effective for the emission of electrons from a metallic surface.

Statement II: Above the threshold frequency, the maximum kinetic energy of photoelectrons is inversely proportional to the frequency of the incident light.

In the light of above statements, choose the correct answer form the options given below

Show answer and solution

Answer: (b)

Statement I: UV has the highest frequency of the three, so it is most effective. True.
Statement II: $KE_{max} = h\nu - \phi$ increases linearly with $\nu$ , not inversely. False.
So the answer is (b).

Report a mistake

More questions on Photoelectric Experiment: Intensity, Stopping Potential & Graphs

The variation of stopping potential (V₀) as a function of the frequency (v) of the…JEE Main 2023 (10 Apr, Shift 2)
With reference to the observations in photo-electric effect, identify the correct…JEE Main 2022 (27 Jul, Shift 2)
In photoelectric experiment keeping the frequency of incident radiation and accelerating…MHT CET 2021 (24 Sep, Shift 1)
In photoelectric effect, the photo currentMHT CET 2021 (23 Sep, Shift 2)
In a photoelectric experiment, increasing the intensity of incident light:JEE Main 2021 (27 Aug, Shift 1)
On a photosensitive surface, if the intensity of incident radiation is increased, the…MHT CET 2021 (21 Sep, Shift 1)
The stopping potential in the context of photoelectric effect depends on the following…JEE Main 2021 (16 Mar, Shift 1)
Light of frequency two times the threshold frequency is incident on photosensitive…MHT CET 2021 (21 Sep, Shift 1)

Photoelectric Experiment: Intensity, Stopping Potential & Graphs question from JEE Main 2023 (13 Apr, Shift 2)

More questions on Photoelectric Experiment: Intensity, Stopping Potential & Graphs