CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 356 - 359 of 463

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Question number: 356

» Electronics and Experimental Methods » Opto-Electronic Devices » Solar Cells

Appeared in Year: 2011

MCQ▾

Question

Monochromatic light of wavelength and intensity falls on a solar cell of area . The conversion efficiency of the solar cell is 10%. If each converted photon results in an electron – hole pair, what is the maximum circuit current supplied by the solar cell?

(Take , and ) (December)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 357

» Classical Mechanics » Lagrangian and Hamiltonian Formalism and Equations of Motion

Appeared in Year: 2011

MCQ▾

Question

The Hamiltonian of a particle of unit mass moving in the XY – plane is given to be:

in suitable units. The initial values are given to be and . During the motion, the curves traced out by the particles in the xy – plane and the plane are (June)

Choices

Choice (4) Response

a.

both hyperbolas

b.

both straight lines

c.

a hyperbola and an ellipse, respectively

d.

a straight line and a hyperbola respectively

Question number: 358

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

Appeared in Year: 2011

MCQ▾

Question

An atom of mass M can be excited to a state of mass by photon capture. The frequency of a photon which can cause this transition is – (December)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 359

» Electronics and Experimental Methods » Operational Amplifiers

Appeared in Year: 2011

MCQ▾

Question

A time varying signal is fed to an Op – Amp circuit with output signal as shown

A circuit diagram of an Op – amp

A Circuit Diagram of an Op – Amp

In figure a circuit diagram of an Op – amp is shown.

The circuit implements a (June)

Choices

Choice (4) Response

a.

Low pass filter with cutoff frequency 16 Hz

b.

Low pass filter with cutoff frequency 100 Hz

c.

High pass filter with cutoff frequency 16 Hz

d.

High pass filter with cutoff frequency 100 Hz

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