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If the momentum of electron is changed by P, then the de-Broglie wavelength associated with it changes by 0.5%. The initial momentum of electron will be:
Options
(a) 200 P
(b) 400 P
(c) P / 200
(d) 100 P
Correct Answer:
200 P
Explanation:
The de-Broglie’s wavelength associated with the moving of electron λ = h/P
Now, according to the problem
dλ / λ= – dp / P
0.5 / 100 = P / P’
P’ = 200 P
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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 body is moving with velocity 30 m/s towards east. After 10 seconds its velocity
- In a given process on an ideal gas, dW=0 and dQ<0. Then for the gas
- A body of mass m is thrown upwards at an angle θ with the horizontal with velocity
- A concave mirror of focal length f₁ is placed at a distance d from a convex lens
- Initial angular velocity of a circular disc of mass M is ?￢ﾂﾁ.Then, two small spheres
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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