Quantum Mechanics-Elementary Theory of Scattering (CSIR Physical Sciences): Questions 1 - 3 of 5

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Question number: 1

» Quantum Mechanics » Elementary Theory of Scattering » Phase Shifts

Appeared in Year: 2014

MCQ▾

Question

A double slit interference experiment uses a laser emitting light of two adjacent frequencies ν1 and ν2(ν1<ν2) . The minimum path difference between the interfering beams for which the interference pattern disappears is – (June -2014)

Choices

Choice (4) Response

a.

c2(v2+v1)

b.

cv2+v1

c.

cv2v1

d.

c2(v2v1)

Question number: 2

» Quantum Mechanics » Elementary Theory of Scattering » Born Approximation

Appeared in Year: 2013

MCQ▾

Question

In the Born approximation, the scattering amplitude f(θ) for the Yukawa potential, V(r)=βrμrr

Is given by, (in the following b=2ksinθ2,E=2k22m ) (June)

Choices

Choice (4) Response

a.

2mβ2(μ2+b2)2

b.

2mβ2(μ2+b2)

c.

2mβ2(μ2+b2)

d.

2mβ2(μ2+b2)3

Question number: 3

» Quantum Mechanics » Elementary Theory of Scattering » Born Approximation

Appeared in Year: 2014

MCQ▾

Question

The scattering amplitude f(θ) for the potential V(r)=βeμr ; where β and μ are positive constants, is given, in the Born approximation, by (in the following b=2ksinθ2 and E=2k22m ) – (June – 2014)

Choices

Choice (4) Response

a.

4mβμ2b2(b2+μ2)

b.

4mβμ2(b2+μ2)2

c.

4mβμ2b2+μ2

d.

4mβμ2(b2+μ2)3

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