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FIFTH S
EMESTER B.Sc. DEGREE EXAMINATION, NOVEMBER 2018
(CUCBCSS—UG)
Physics/Applied Physics

PHY 5B 07/APY 5B 08—QUANTUM MECHANICS

: Three Hours
Maximum : 80 Marks

Section A

Answer all questions.

Write down Rayleigh—Jeans formula.
Average energy of Planck's oscillator is

Write down uncertainty principle.

Write down energy time uncertainty relation.

Write the expression for Balmer series.

The spectral series of Hydrogen in ultra violet regions.
n atom in terms of Bohr radius.

Write down the expression for orbital radius of Hydroge

Write down the condition for normalization of the wave function.
Orbital angular momentum quantum number can have the values —————-

Operator correspondence of energy is

(10 x 1 = 10 marks)

Section B

Answer all questions.

What is photoelectric effect.
Explain pair production.
Explain Schwarzschild radius.

guish between phase and
Bohr Postulates.

Distin group velocity.
Write down the
Write down the admissibility con

Distinguis

dition for a function to become wave function.

५ ‘cal state’ with ‘Quantum state’.
ween are classical state wl!
= ۱ (7 x 2 = 14 marks)