Electromagnetic Radiation & Photoelectric Effect: JEE Questions & Solutions
9 previous-year JEE Chemistry questions on Electromagnetic Radiation & Photoelectric Effect, each with a worked step-by-step solution.
Previous-year questions
- 01
The work functions of two metals (M_A and M_B) are in the 1: 2 ratio. When these metals are exposed to photons of energy 6 eV, the kinetic…
MCQMediumJEE 2026 - 02
Identify the INCORRECT statements from the following: A. Notation ²⁴₁₂Mg represents 24 protons and 12 neutrons. B. Wavelength of a…
MCQMediumJEE 2026 - 03
The wavelength of photon 'A' is 400 nm. The frequency of photon 'B' is 10¹⁶ s⁻¹. The wave number of photon 'C' is 10⁴ cm⁻¹. The correct…
MCQMediumJEE 2026 - 04
Which of the following statements are correct, if the threshold frequency of caesium is 5.16 × 10¹⁴ Hz? A. When Cs is placed inside a…
MCQMediumJEE 2025 - 05
The ionization energy of sodium in kJ/mol. If electromagnetic radiation of wavelength 242 nm is just sufficient to ionize sodium atom, what…
MCQEasyJEE 2024 - 06
The energy of one mole of photons of radiation of frequency 2 × 10¹² Hz in J mol⁻¹ is. (Nearest integer) Given: h = 6.626 × 10⁻³⁴ Js, N_A =…
NVAEasyJEE 2023 - 07
The number of incorrect statement(s) about the black body from the following is: (1) Emits or absorbs energy in the form of electromagnetic…
NVAEasyJEE 2023 - 08
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: In the photoelectric…
MCQEasyJEE 2023 - 09
Values of work function (W₀) for a few metals are given below. | Metal | Li | Na | K | Mg | Cu | Ag | |---|---|---|---|---|---|---| | W₀ /…
NVAEasyJEE 2023
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