CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 401 - 403 of 463

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Question number: 401

» Mathematical Methods of Physics » Analytic Functions

Appeared in Year: 2016

MCQ▾

Question

The dependence of current on the voltage of a certain device is given by,

Where and are constant. In an experiment the current is measured as the voltage applied across the device is increased. The parameters and can be graphically determined as, (June)

Choices

Choice (4) Response

a.

The slope and the intercept of the graph

b.

The negative of the ratio of the intercept and the slope, and the intercept of the graph

c.

The slope and the intercept of the graph

d.

The negative of ratio of intercept and slope, and intercept of the graph

Question number: 402

» Mathematical Methods of Physics » Cayley-Hamilton Theorem

Appeared in Year: 2016

MCQ▾

Question

The matrix satisfies the equation: (December)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 403

» Electronics and Experimental Methods » Opto-Electronic Devices » LEDs

Appeared in Year: 2016

MCQ▾

Question

The active medium in a blue LED (light emitting diode) is a alloy. The band gaps of and are and respectively. If the band gap of varies approximately linearly with , the value of required for the emission of blue light of wavelength is (take ) (December)

Choices

Choice (4) Response

a.

0.50

b.

0.33

c.

0.75

d.

0.95

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