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When a metallic surface is illuminated with radiation of wavelength λ, the stopping potential is V. If the same surface is illuminating with radiation of wavelength 2λ, the stopping potential is V/4. The threshold wavelength for the metallic surface is
Options
(a) 5λ
(b) 5/2 λ
(c) 3λ
(d) 4λ
Correct Answer:
3λ
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
Related Questions: - A L-C-R circuit with L=1.00 mH, C=10μF and R=50Ω, is driven with 5 V AC voltage.
- An electric dipole of moment ‘p’ is placed in an elecatric field of intensity ‘E’
- Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 sec.
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Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A L-C-R circuit with L=1.00 mH, C=10μF and R=50Ω, is driven with 5 V AC voltage.
- An electric dipole of moment ‘p’ is placed in an elecatric field of intensity ‘E’
- Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 sec.
- An electron in the hydrogen atom jumps from excited state n to the ground state
- A sample of HCl gas is placed in an electric field of 5 x 10⁴ N/C
Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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