NEET-UG SERIES

Physics

Photoelectric Effect

8 previous year questions.

Volume: 8 Ques

Yield: Medium

High-Yield Trend

1

2025

1

2024

1

2018

1

2017

1

2013

1

2002

1

1992

1

1990

Chapter Questions
8 MCQs

01

PYQ 1990

medium

physics ID: neet-ug-

The momentum of a photon of an electromagnetic radiation is What is the frequency of the associated waves ?

1

2

3

4

02

PYQ 1992

medium

physics ID: neet-ug-

The cathode of a photoelectric cell is changed such that the work function changes from to If the current before and after changes are and, all other conditions remaining unchanged, then (assuming)

1

2

3

4

03

PYQ 2002

easy

physics ID: neet-ug-

The value of Planck's constant is

1

2

3

4

04

PYQ 2013

medium

physics ID: neet-ug-

For photoelectric emission from certain metal the cut-off frequency is v. If radiation of frequency 2v impinges on the metal plate, the maximum possible velocity of the emitted electron will be (m is the electron mass)

1

2

3

4

05

PYQ 2017

medium

physics ID: neet-ug-

The photoelectric threshold wavelength of silver is 3250 \times 10 -10 m. The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength 2536 \times 10 -10 m is (Given h = 4.14 \times 10 -15 eVs and c = 3 \times 10 8 ms -1)

1

≃ 6 \times 10 5 ms -1

2

≃ 0.6 \times 10 6 ms -1

3

≃ 61 \times 10 3 ms -1

4

≃ 0.3 \times 10 6 ms -1

06

PYQ 2018

medium

physics ID: neet-ug-

The power radiated by a black body is and it radiates maximum energy at wavelength, . If the temperature of the black body is now changed so that it radiates maximum energy at wavelength, the power radiated by it becomes . The value of is

1

2

3

4

07

PYQ 2024

hard

physics ID: neet-ug-

If is the work function of photosensitive material in eV and light of wavelength of numerical value metre, is incident on it with energy above its threshold value at an instant then the maximum kinetic energy of the photo-electron ejected by it at that instant (Take -Planck’s constant, -velocity of light in free space) is (in SI units):

1

2

3

4

08

PYQ 2025

hard

physics ID: neet-ug-

Which of the following options represent the variation of photoelectric current with the property of light shown on the x-axis?

1

A and C

2

A and D

3

B and D

4

A only