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Quantum Mechanics
calculate the de Broglie wavelength of a free electron with an energy of 50 GeV
Quantum Mechanics
A photon of wavelength 4 angstrom an electron at rest and this photon is deflected at an angle of 1500 to its original direction. Determine the wavelength of this photon after the collision
Quantum Mechanics
calculate A photon of infrared radiation whose wavelength is 1064 nm .
Quantum Mechanics
An object placed at the height of 10 metres from the surface of earth has a gravitational potential energy of 2100 J. What is the mass of the object? Gravitational acceleration is 10 m/s2
Quantum Mechanics
(b). Give the main two conditions for the occurrence of constructive interference in Bragg’s law with a suitable diagram.
Quantum Mechanics
A quantum particle confined to one dimensional box of width'a' is in its first excited state. What is the probability of finding the particle over an interval of (a/2) marked symmetrically at the centre of the box
Quantum Mechanics
2.5kg of water is heated in an open container for 5 minutes using a heater of power 2KW. Which of the following statements about the temperature of the water is true?(the SHC of water= 4200Jkg-1k-1)
A. The change in temperature of the water is 58.30C
B. The change in temperature of the water is 57.30C
C. The change in temperature of the water is greater 57.30C
D.If the initial temperature of the water was 23.70C then its final temperature would be 8100C
Quantum Mechanics
The work function of sodium metal is 2.3 eV. What is the longest wavelength of light that cause
photoelectric emission from sodium
photoelectric emission from sodium
Quantum Mechanics
Prove the following:
i. [AB,C] = [Â,C]B + Â[B,C]
ii. ihq = qH - Hq given that H = mq
Quantum Mechanics
Two blocks of masses 7 and 5 kg are connected by a light inextensible string that runs over a frictionless pulley. The 7 kg block is pulled to the left with a force of 68 N at an angle of 12
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#340153 on Dec 2023
#340153 on Dec 2023