GATE (Graduate Aptitude Test in Engineering) Physics (PE): Questions 5 - 8 of 1823
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Question 5
Appeared in Year: 2013
Question MCQ▾
Two monochromatic source, , emit light at 600 and 700 nm, respectively. If their frequency bandwidths are and GHz, respectively, then the ratio of line width of to is approximately – (December)
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 6
Appeared in Year: 2013
Question MCQ▾
A planet of mass m and an angular momentum L moves in a circular orbit in a potential, , where k is a constant. If it is slightly perturbed radially, the angular frequency of radial oscillation is – (June)
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 7
Appeared in Year: 2013
Question MCQ▾
The insulation resistance R of an insulated cable is measured by connecting it in parallel with a capacitor C, a voltmeter, and battery B as shown. The voltage across the cable dropped from 150 V to 15 V, 1000 seconds after the switch S is then its insulation resistance is approximately, (June)
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 8
Appeared in Year: 2013
Question MCQ▾
Let A, B and C be function of phase space variables (coordinates and momenta of a mechanical system) . If {,} represents the Poisson bracket, the value of is given by – (December)
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. | 0 |