JEE Main 2022 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 29 June 2022, Shift 2, Physics Q36

Question 36 of 90 in this shift, Physics question 6 of 30, Section A.

The electric field at a point associated with a light wave is given by

E = 200\,[\,\sin(6\times10^{15})\,t\,+\,\sin(9\times10^{15})\,t\,]\,\mathrm{Vm^{-1}}

Given :

h

= 4.14 ×

10^{-15}

eVs If this light falls on a metal surface having a work function of 2.50

eV

, the maximum kinetic energy of the photoelectrons will be

(1)1.90 $eV$
(2)3.27 $eV$
(3)3.60 $eV$
(4)3.42 $eV$ Official answer

Official answer

Option 4

NTA final key.

Chapter: Dual Nature of Radiation and Matter
Topic: Photoelectric Effect
Idea tested: Einstein's Photoelectric Equation

Same idea in other shifts

Asked 14× in all

5 Apr 2026, Shift 1 · Q41Light source having wavelength 331 nm is used to generate photo-electrons whose stopping potential is 0.2 V. The work function of the used…EasySingle correct
4 Apr 2024, Shift 2 · Q47Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Number of photons…MediumAssertion–reason
6 Apr 2024, Shift 1 · Q47In photoelectric experiment energy of 2.48 eV irradiates a photo sensitive material. The stopping potential was measured to be 0.5 V. Work…EasySingle correct
9 Apr 2024, Shift 2 · Q47UV light of $4.13$ eV is incident on a photosensitive metal surface having work function $3.13$ eV. The maximum kinetic energy of ejected…EasySingle correct
28 Jul 2022, Shift 2 · Q17Two streams of photons, possessing energies equal to five and ten times the work function of metal are incident on the metal surface…EasySingle correct
29 Jul 2022, Shift 1 · Q46The kinetic energy of emitted electron is E when the light incident on the metal has wavelength $\lambda$ . To double the kinetic energy,…MediumSingle correct
24 Jun 2022, Shift 1 · Q56When light of frequency twice the threshold frequency is incident on the metal plate, the maximum velocity of emitted electron is $v_1$ .…MediumNumerical value
28 Jun 2022, Shift 2 · Q47Let $K_1$ and $K_2$ be the maximum kinetic energies of photo-electrons emitted when two monochromatic beams of wavelength $\lambda_1$ and…MediumSingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.