CSIR Physical Sciences: Questions 241 - 243 of 389

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Question number: 241

» Quantum Mechanics » Timeindependent Perturbation Theory and Applications

Appeared in Year: 2013

MCQ▾

Question

A perturbation Vper=aL2 is added to the Hydrogen atom potential. The shift in the energy level of 2P state, when the effects of spin are neglected up to second order in a , is – (Dec. 2013)

Choices

Choice (4) Response

a.

a2+32a24

b.

2a2+a24

c.

2a2

d.

0

Question number: 242

» Thermodynamic and Statistical Physics » Diffusion Equation

Appeared in Year: 2013

MCQ▾

Question

Consider the following ratio of the partial decay widest,

R1=Γ(ρ+π++π0)Γ(ρπ+π0)

R2=Γ(Δ++π++P)Γ(Δπ+n)

If the effects pf electromagnetic and weak interaction are neglected, then R1 and R2 are respectively is given as, (Dec -2013)

Choices

Choice (4) Response

a.

1and1

b.

1and2

c.

2and1

d.

1and2

Question number: 243

» Electromagnetic Theory » Laplace and Poisson Equations

Appeared in Year: 2013

MCQ▾

Question

If the electrostatic potential V(r,θ,ϕ) in a charge free region has the form V(r,θ,ϕ)=f(r)cosθ , then the functional form of f(r) (in the following a and b are constants) is – (December – 2013)

Choices

Choice (4) Response

a.

ar+br2

b.

aln(rb)

c.

ar2+br

d.

ar+br

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