CSIR Physical Sciences: Questions 44 - 46 of 389

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Question number: 44

» Quantum Mechanics » Wave-Function in Coordinate Representations

Appeared in Year: 2012

MCQ▾

Question

If a particle is represented by the normalized wave function,

ψ(x)={

The uncertainty Δp in its momentum is – (December)

Choices

Choice (4) Response
a.

10ha

b.

5h2a

c.

2h5a

d.

5h2a

Question number: 45

» Mathematical Methods of Physics » Vector Algebra and Vector Calculus

Appeared in Year: 2014

MCQ▾

Question

Let r denote the position vector of any point in three dimensional space and r= r . Then, (December)

Choices

Choice (4) Response
a.

r=0and×r=rr

b.

r=3and2r=rr2

c.

r=3and×r=0

d.

r=0and2r=0

Question number: 46

» Thermodynamic and Statistical Physics » Phase Equilibria

Appeared in Year: 2013

MCQ▾

Question

The entropy S of a thermodynamic system as a function of energy E is given by the following graph,

Entropy as a function of energy

Entropy as a Function of Energy

In figure the entropy S of a thermodynamic system as a function of energy E is shown.

The temperature of the phases A, B and C denoted by TA,TB and TC , respectively, satisfy the following inequalities – (December)

Choices

Choice (4) Response
a.

TC>TB>TA

b.

TA>TC>TB

c.

TB>TC>TA

d.

TB>TA>TC

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