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The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV, and the stopping potential for a radiation incident on this surface 5 V. The incident radiation lies in
Options
(a) X-ray region
(b) Ultra-violet region
(c) Infra-red region
(d) Visible region
Correct Answer:
Ultra-violet region
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
Related Questions: - Current in a coil changes from 4 A to zero in 0.1 second and the emf induced is 100V
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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
- Current in a coil changes from 4 A to zero in 0.1 second and the emf induced is 100V
- In an AC generator, a coil with N turns, all of the same area A and total resistance R,
- Three capacitors 3μF,6μF and 6μF are connected in series to a source of 120V.
- An object is attached to the bottom of a light vertical spring and set vibrating.
- The length of an elastic string is a metre when the longitudinal tension is 4N and b
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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