Q#1 (a)(i)A thermal neutron has a speed v at temperature T = 300 K and kinetic energy m = 3 KT Calculate its deBroglie wavelength. State whether a beam of these neutrons could be diffracted by a crystal, and why? (ii) Explain in detail two Heisenberg uncertainty principles. Apply Uncertainty principle to estimate the kinetic energy (in MeV) of a nucleon bound within a nucleus of radius 10 15 m. (b) A metal surface is illuminated by 8.5 × 10'* Hz light emits electrons whose maximum energy is 1.97 eV. The same surface is illuminated by 12 x 10 Hz light emits electrons whose maximum energy is 0.53 eV. Find the Planck's constant and work function of the surface.

Q#1 (a)(i)A thermal neutron has a speed v at temperature T = 300 K and kinetic energy m = 3 KT Calculate its deBroglie wavelength. State whether a beam of these neutrons could be diffracted by a crystal, and why? (ii) Explain in detail two Heisenberg uncertainty principles. Apply Uncertainty principle to estimate the kinetic energy (in MeV) of a nucleon bound within a nucleus of radius 10 15 m. (b) A metal surface is illuminated by 8.5 × 10'* Hz light emits electrons whose maximum energy is 1.97 eV. The same surface is illuminated by 12 x 10 Hz light emits electrons whose maximum energy is 0.53 eV. Find the Planck's constant and work function of the surface.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

Q#1 (a)(i)A thermal neutron has a speed v at temperature T= 300 K and kinetic energy m-:
3 KT
Calculate its deBroglie wavelength. State whether a beam of these neutrons could be diffracted by a
crystal, and why?
(ii) Explain in detail two Heisenberg uncertainty principles. Apply Uncertainty principle to estimate the kinetic
energy (in MeV) of a nucleon bound within a nucleus of radius 10 15 m.
(b) A metal surface is illuminated by 8.5 x 10'* Hz light emits electrons whose maximum energy is 1.97 eV.
The same surface is illuminated by 12 x 104H2 light emits electrons whose maximum energy is 0.53 eV. Find
the Planck's constant and work function of the surface.
idth nf one dimensional hox in which a proton has an energy of 400,000 eV in its first excited

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