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Photons of energy 6 eV are incident on a metal surface whose work function is 4 eV. The minimum kinetic energy of the emitted photo-electrons will be
Options
(a) 0 eV
(b) 1 eV
(c) 2 eV
(d) 10 eV
Correct Answer:
0 eV
Explanation:
Minimum kinetic energy is always zero, when the photon loses its energy by collision.
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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
- Steam at 100⁰C is passed into 20 g of water at 10°C. When water acquires a temperature
- Two point charges +2 coulomb and +10 coulomb repel each other with a force of 12 N.
- The fossil bone has a ¹⁴C:¹²C ratio, which is [1/16] of that in a living animal
- A radioactive nucleus of mass M emits a photon of frequency v and the nucleus recoils.
- A conducting square frame of side ‘a’ and a long straight wire carrying current I
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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