CSIR Physical Sciences: Questions 366 - 370 of 389

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Passage

A flux quantum (fluxoid) is approximately equal to 2×107gausscm2 . A type II superconductor is placed in a small magnetic field, which is then slowly increased till the field starts penetrating the superconductor. The strength of the field at this point is 2π×105 gauss. (June)

Question number: 366 (1 of 2 Based on Passage) Show Passage

» Condensed Matter Physics » Superconductivity » Type -II Superconductors

Appeared in Year: 2016

MCQ▾

Question

The applied field is further increased till superconductivity is completely destroyed. The strength of the field is now 8π×105gauss . The correlation length of the superconductor is:

Choices

Choice (4) Response

a.

2000

b.

200

c.

50

d.

628

Question number: 367 (2 of 2 Based on Passage) Show Passage

» Condensed Matter Physics » Superconductivity » Type -II Superconductors

Appeared in Year: 2016

MCQ▾

Question

The penetrate depth of this superconductor is –

Choices

Choice (4) Response

a.

100

b.

10

c.

1000

d.

314

Passage

Consider the matrix M=(111111111)

(June)

Question number: 368 (1 of 1 Based on Passage) Show Passage

» Mathematical Methods of Physics » Matrices

Appeared in Year: 2011

MCQ▾

Question

The eigenvalues of M are –

Choices

Choice (4) Response

a.

1, 1, 3

b.

0, 0,3

c.

1, 1,1

d.

0, 1,2

Question number: 369

» Electromagnetic Theory » Electromagnetic Induction

Appeared in Year: 2011

MCQ▾

Question

Consider a solenoid of radius R with n turns per unit length, in which a time dependent current I=I0sinωt (where ωRc1 ) flows. The magnitude of the electric field at a perpendicular distance r<R from the axis of symmetry of the solenoid, is – (December)

Choices

Choice (4) Response

a.

0

b.

12rωμ0nI0R2cosωt

c.

12ωμ0nI0rsinωt

d.

12ωμ0nI0rcosωt

Passage

A resistance is measured by passing current through it and measuring the resulting voltage drop. If the voltmeter and the ammeter have uncertainties of 3% and 4% , respectively, then – (June)

Question number: 370 (1 of 2 Based on Passage) Show Passage

» Mathematical Methods of Physics » Dimensional Analysis

Appeared in Year: 2011

MCQ▾

Question

The uncertainty in the computed value of the power dissipated in resistance is:

Choices

Choice (4) Response

a.

9%

b.

7%

c.

5%

d.

11%

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