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An electron of mass m and a photon have same energy E. The ratio of de-Broglie wavelengths associated with them is
Options
(a) (E/2m)¹∕₂
(b) c(2mE)¹∕₂
(c) 1/c (2m/E)¹∕₂
(d) 1/c (E/2m)¹∕₂
Correct Answer:
1/c (E/2m)¹∕₂
Explanation:
λₑ = h / √2mE,
λp = hc / E,
E = hc / λp
λₑ / λp = (h / √2mE) (E / hc)
= 1/c √(E / 2m)
=1/c (E/2m)¹∕₂
Related Questions: - A black body is heated from 27° C to 127° C. The ratio of their energies of radiations
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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 black body is heated from 27° C to 127° C. The ratio of their energies of radiations
- In a semiconductor
- A source is moving towards an observer with a speed of 20 m/s and having frequency
- A fringe width of a certain interference pattern is β=0.002 cm. What is the distance
- A wheel has angular acceleration of 3.0 rad/sec² and an initial angular speed of 2.00
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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