Q9/10: What is the momentum of a photon of frequency nu?
Anonymous Quiz
36%
h*nu/c
33%
h*c/nu
13%
h*nu
18%
nu/h*c
0%
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Q10/10: Assertion: The photoelectric effect demonstrates the particle nature of light. Reason: Photoelectric emission is an instantaneous process.
Anonymous Quiz
42%
Both A and R are true and R is the correct explanation of A
29%
Both A and R are true but R is not the correct explanation of A
26%
A is true but R is false
0%
A is false but R is true
3%
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Next quiz Friday at 20:00
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✨ Quiz Time! ✨
Answer today's quiz questions and test your knowledge.
Every question is a step toward exam success!
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Every question is a step toward exam success!
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Good luck!
Q1/10: A proton and an alpha particle are accelerated through the same potential difference. The ratio of their de Broglie wavelengths is:
Anonymous Quiz
16%
1:1
39%
2:1
29%
2*sqrt(2):1
13%
1:2*sqrt(2)
3%
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Q2/10: Stopping potential in the photoelectric effect depends on:
Anonymous Quiz
15%
Intensity of incident light
50%
Frequency of incident light and nature of material
12%
Angle of incidence
24%
Duration of light falling on the metal
0%
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Q3/10: The stopping potential for a certain photoelectric surface is 3 V. The maximum kinetic energy of the emitted photoelectrons is:
Anonymous Quiz
15%
3 J
36%
3 eV
36%
1.6 x 10^-19 J
12%
4.8 J
0%
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Q4/10: Light of frequency 1.5 times the threshold frequency is incident. What will be the photoelectric current if the frequency is halved and intensity is doubled?
Anonymous Quiz
9%
Doubled
38%
Halved
34%
Zero
16%
Quadrupled
3%
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Q5/10: An electron is accelerated from rest through a potential difference of 100 V. What is its de Broglie wavelength?
Anonymous Quiz
6%
1.227 nm
33%
0.1227 nm
27%
12.27 nm
27%
0.0122 nm
6%
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Q6/10: If the distance of a point source of light from a photoelectric surface is increased, what happens to the stopping potential?
Anonymous Quiz
14%
Increases
29%
Decreases
38%
Remains constant
17%
Alternately increases and decreases
2%
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Q7/10: The phenomenon of electron emission from a metal surface due to the application of a strong electric field is called:
Anonymous Quiz
9%
Thermionic emission
37%
Photoelectric emission
26%
Secondary emission
23%
Field emission
5%
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Q8/10: Which of the following correctly represents the variation of photoelectric current with intensity of incident light?
Anonymous Quiz
14%
A parabola
43%
A straight line passing through the origin
17%
An exponential curve
17%
A hyperbola
10%
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Q9/10: For a given metal, the incident frequency of light is nu. If nu is doubled, the maximum kinetic energy of the photoelectrons:
Anonymous Quiz
26%
Doubles
30%
Halves
33%
Becomes more than double
7%
Becomes less than double
4%
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❤1
Q10/10: Assertion: Macroscopic objects do not show observable wave-like properties. Reason: Their de Broglie wavelength is vanishingly small.
Anonymous Quiz
39%
Both A and R are true and R is the correct explanation of A
37%
Both A and R are true but R is not the correct explanation of A
14%
A is true but R is false
6%
A is false but R is true
4%
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🎉 Quiz Finished! 🎉
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Next quiz Sunday at 20:00
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Class 12th physics notes
📚 ALL SUBJECTS PREMIUM BOOKS | SESSION 2026–27🚀 Start your preparation for the new CBSE Session 2026–27 with the best study books & question banks! 💯 ✨ Read these books completely and solve every question. With consistent practice, scoring 90–95%+ is absolutely…
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📚 ALL SUBJECTS PREMIUM BOOKS | SESSION 2026–27🚀
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✨ Read these books completely and solve every question. With consistent practice, scoring 90–95%+ is absolutely possible!
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