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NEET
Physics

Photoelectric Effect Experiment

Low Priority
Consistency: 35%
Weightage: 7 / 20 Yrs

High-Yield Trend

1
2025
1
2023
1
2011
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2010
3
2009
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2007
1
2006

Questions
9 MCQs

01
PYQ 2006
easy
physics ID: neet-200

A photocell employs a photo-electric effect to convert:

1. change in the frequency of light into a change in electric voltage.
2. change in the intensity of illumination into a change in photoelectric current.
3. change in the intensity of illumination into a change in the work function of the photocathode.
4. change in the frequency of light into a change in the electric current.

1
(1)
2
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3
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4
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02
PYQ 2007
easy
physics ID: neet-200

Monochromatic light of frequency 6.0\times 1014 Hz is produced by a laser. The power emitted is 2\times 10-3 W. The number of photons emitted, on average, by the source per second is:

1. 5\times 1015

2. 5\times 1016

3. 5\times 1017

4. 5\times 1014

1
(1)
2
(2)
3
(3)
4
(4)
03
PYQ 2009
easy
physics ID: neet-200
Monochromatic light of wavelength 667 nm is produced by a helium-neon laser. The power emitted is 9mW. The number of photons arriving per second on average at a target irradiated by this beam is:
1. 9 x 1017

2. 3 X 1016

3. 9 x 1015

4. 3 X 1019

1
(1)
2
(2)
3
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4
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04
PYQ 2009
easy
physics ID: neet-200
The figure shows a plot of photocurrent versus anode potential for a photosensitive surface for three different radiations. Which one of the following is a correct statement?
1. Curves and represent incident radiations of different frequencies and different intensities.
2. Curves and represent incident radiation of the same frequency but of different intensities.
3. Curves and represent incident radiation of different frequencies and different intensities.
4. Curves and represent incident radiations of the same frequency having the same intensity.
1
(1)
2
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3
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05
PYQ 2009
easy
physics ID: neet-200
The number of photoelectrons emitted for the light of a frequency ν (higher than the threshold frequency ν0) is proportional to:
1. ν -ν0
2. threshold frequency (ν0)
3. intensity of light
4. frequency of light (ν)
1
(1)
2
(2)
3
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4
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06
PYQ 2010
easy
physics ID: neet-201

A source S1 is producing 1015 photons per sec of wavelength 5000 Å. Another source S2 is producing 1.02\times 1015 photons per second of wavelength 5100 Å. Then, (power of S2)/(power of S1) is equal to:

1. 1.00

2. 1.02

3. 1.04

4. 0.98

1
(1)
2
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3
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07
PYQ 2011
easy
physics ID: neet-201
In the photoelectric emission process from a metal of work function 1.8 eV, the kinetic energy of most energetic electrons is 0.5 eV. The corresponding stopping potential is:

1. 1.3 V

2. 0.5 V

3. 2.3 V

4. 1.8 V

1
(1)
2
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3
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4
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08
PYQ 2023
easy
physics ID: neet-202
The work functions of Caesium Potassium and Sodium are and respectively. If incident electromagnetic radiation has an incident energy of which of these photosensitive surfaces may emit photoelectrons?
1. only 2. only
3. both and 4. only
1
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09
PYQ 2025
medium
physics ID: neet-202
Which of the following options represents the variation of photoelectric current with the property of light shown on the axis?
1. and
2. and
3. only
4. and
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2
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3
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4
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Preparing Photoelectric Effect Experiment for NEET

Photoelectric Effect Experiment is a specific sub-topic that frequently appears in the NEET examination. Understanding the underlying principles and practicing targeted questions is key to mastering this concept.

The questions compiled above are previous year questions (PYQs) directly related to Photoelectric Effect Experiment. Practicing these specific questions helps you understand the difficulty level and the examiner's approach to this topic.

Topic Frequently Asked Questions

Is Photoelectric Effect Experiment a high-weightage topic?

You can refer to the priority and consistency badges at the top of this page. High priority topics should be thoroughly revised multiple times before the exam.

Should I memorize the solutions?

No, it is highly recommended to understand the core concept and methodology behind each solution rather than memorizing them, as exact questions are rarely repeated, but the concepts definitely are.