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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
- If doubly ionised lithium atom is hydrogen like with atomic number 3, the wavelength
- Resistances n, each r Ω, when connected in parallel give an equivalent resistance
- A proton is moving in a uniform magnetic field B in a circular path of radius a
- A car moves from X to Y with a uniform speed v(u) and returns to Y with a uniform speed
- When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid
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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