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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
- An aeroplane flies 400m due to North and then 300m due to south and then flies
- Two strings A and B, made of same material are stretched by same tension
- A polished metal plate has a rough and black-spot. It is heated to 1400 K
- If the nucleus ²⁷₁₃Al has nuclear radius of about 3.6 fm
- A wire of length 1 m is placed in a uniform magnetic field of 1.5 tesla at an angle
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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