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If the kinetic energy of the particle is increased to 16 times its previous value, the percentage change in the de-broglie wavelength of the particle is
Options
(a) 25
(b) 75
(c) 60
(d) 50
Correct Answer:
75
Explanation:
For de-Broglie wavelength, λ₁ = h / p = h / √(2mK) —–(i)
λ₂ = h / √(2m 16K) = h / 4√(2mK) = λ₁ / 4 ——-(ii)
λ₂ = 25% of λ₁
There is 75% change in the wavelength.
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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 of mass m is thrown upwards at an angle θ with the horizontal with velocity
- Three objects coloured black, gray and white can withstand hostile conditions upto 2800⁰C.
- Equal currents are passing through two very long and straight parallel wires
- The resistance of a bulb filament is 100 Ω at a temperature of 100⁰C.
- The length of an elastic string is a metre when the longitudinal tension is 4N and b
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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