CSIR Physical Sciences: Questions 61 - 63 of 389

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 389 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 250.00 or

Question number: 61

» Electromagnetic Theory » Gauss Law and Applications

Appeared in Year: 2012

MCQ▾

Question

Consider a hallow charged shell of inner radius a and outer radius b . The volume charge density is ρ(r)=kr2 (k is a constant) in the region a<r<b . The magnitude of the electric field produced at distance r>a is –

Choices

Choice (4) Response
a.

k(ba)ε0r2 for all r>a

b.

k(ra)ε0r2 for a<r<b and k(ba)ε0r2 for r>b

c.

k(ba)ε0r2 for a<r<b and kbε0r2 for r>b

d.

k(ra)ε0a2 for a<r<b and k(ba)ε0a2 for r>b

Question number: 62

» Electronics and Experimental Methods » Operational Amplifiers

Appeared in Year: 2012

MCQ▾

Question

In the Op – amp circuit shown in the figure below, the input voltage Vi is 1V. The value of the output V0 is – (June)

An operational amplifier circuit

An Operational Amplifier Circuit

Figure shows the op – amp circuit of input voltage Vi is 1V.

Choices

Choice (4) Response
a.

0.25V

b.

0.50V

c.

0.33V

d.

1.00V

Question number: 63

» Classical Mechanics » Special Theory of Relativity » Mass-Energy Equivalence

Appeared in Year: 2012

MCQ▾

Question

Three particle of equal mass m are connected by two identical mass less springs of stiffness constant k as shown in figure –

A system of three particles and two springs

A System of Three Particles and Two Springs

In figure three particles of equal mass m are connected by two identical massless springs of stiffness constant k.

If x1,x2andx3 denote the horizontal displacements of the masses from their respective equilibrium position, the potential energy of the system is – (December)

Choices

Choice (4) Response
a.

12k[x12+x22+x32x2(x1+x3)]

b.

12k[x12+2x22+x32+2x2(x1+x3)]

c.

12k[x12+x22+x32]

d.

12k[x12+2x22+x322x2(x1+x3)]

Sign In