Class 12th physics notes
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Q7/10: The bending of light around the corners of an obstacle is known as:
Anonymous Quiz
19%
Dispersion
33%
Interference
37%
Diffraction
7%
Polarisation
Q8/10: To observe significant diffraction, the size of the obstacle or aperture should be:
Anonymous Quiz
19%
Much larger than wavelength
33%
Much smaller than wavelength
29%
Comparable to the wavelength
14%
Infinite
Q9/10: If the distance between two slits in Young's experiment is halved, the fringe width will:
Anonymous Quiz
18%
Be halved
18%
Remain the same
43%
Double
21%
Quadruple
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✨ Quiz Time! ✨

Answer today's quiz questions and test your knowledge.

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Q1/10: The minimum energy required to eject an electron from a metal surface is called:
Anonymous Quiz
28%
Kinetic energy
32%
Work function
16%
Ionization energy
20%
Threshold energy
Q3/10: According to Einstein's photoelectric equation, the maximum kinetic energy of emitted photoelectrons is:
Anonymous Quiz
36%
h * nu + work function
36%
h * nu - work function
18%
work function - h * nu
9%
h * nu / work function
Q4/10: If the intensity of incident light increases, the number of emitted photoelectrons:
Anonymous Quiz
52%
Increases
17%
Decreases
30%
Remains the same
0%
Becomes zero
Q5/10: The stopping potential in a photoelectric experiment depends linearly on:
Anonymous Quiz
41%
Intensity of incident light
45%
Frequency of incident light
9%
Angle of incidence
5%
Distance of source
Q6/10: Assertion (A): Photoelectric effect demonstrates the particle nature of light. Reason (R): Light interacts with matter in discrete quanta.
Anonymous Quiz
44%
Both A and R are true, R explains A
19%
Both A and R are true, R does not explain A
25%
A is true, R is false
13%
A is false, R is true
Q7/10: The de Broglie wavelength of an electron accelerated through a potential difference V is proportional to:
Anonymous Quiz
32%
V
37%
1 / V
21%
1 / sqrt(V)
5%
sqrt(V)
Q8/10: What is the rest mass of a photon?
Anonymous Quiz
32%
Zero
9%
Infinity
27%
9.1 x 10^-31 kg
18%
1.6 x 10^-27 kg
Q10/10: If the frequency of incident light is doubled, the stopping potential will:
Anonymous Quiz
18%
Double
18%
Halve
59%
More than double
6%
Less than double
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Next quiz today at 20:00 (in 23h 51m)
✨ Quiz Time! ✨

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Q1/10: An electron and a proton have the same kinetic energy. Which one has the greater de Broglie wavelength?
Anonymous Quiz
12%
Electron
24%
Proton
47%
Both have same wavelength
18%
Cannot be determined
Q2/10: The momentum of a photon of wavelength lambda is given by:
Anonymous Quiz
5%
h * lambda
32%
h / lambda
26%
lambda / h
32%
h * c / lambda