The number of photo electrons emitted for light of a frequency v (higher than the threshold frequency v₀) is proportional to:
Options
(a) Threshold frequency (v₀) (b) Intensity of light (c) Frequency of […]
The ratio of specific charge of an α-particle to that of a proton is
Options
(a) (1:2) (b) (2:1) (c) (1:1) (d) (1:3)
Correct Answer:
(1:2)
Explanation:
No explanation available. Be the first […]
Which of the following phenomenon exhibited the particle nature of light?
Options
(a) Photoelectric effect (b) Interference (c) Polarization (d) Refraction
Correct Answer:
Photoelectric effect
Explanation:
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The work function of sodium is 2.3 eV. The threshold wavelength of sodium will be
Options
(a) 5380 Å (b) 2900 Å (c) 2500 Å (d) 2000 Å
Correct Answer:
5380 Å
Explanation:
Work […]
In a photoelectric effect experiment, the slope of the graph between the stopping potential and the incident frequency will be
Options
(a) 10⁻¹⁵ (b) 10⁻³⁴ (c) 1 (d) 0.5
Correct Answer:
10⁻¹⁵
Explanation: […]
Monochromatic light of frequency 6.0 x 10¹⁴ Hz is produced by a laser. The power emitted is 2 x 10⁻³ ?. The number of photons emitted, on the average, by the sources per second is […]
What is the difference between soft and hard X-ray?
Options
(a) Velocity (b) Intensity (c) Polarization (d) Frequency
Correct Answer:
Frequency
Explanation:
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The name of ions knocked out from the hot surface is
Options
(a) nuclei (b) neutrons (c) electrons (d) protons
Correct Answer:
electrons
Explanation:
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X-ray beam can be deflected by
Options
(a) Magnetic field (b) Electric field (c) Both (a) and (b) (d) None of these
Correct Answer:
None of these
Explanation:
No explanation available. Be the […]
The threshold frequency for a certain photosensitive metal is ν₀. When it is illuminated by light of frequency ν=2ν₀, the maximum velocity of photoelectrons is ν₀. What will be the maximum velocity of the photoelectrons […]
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