KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics: Questions 84 - 86 of 268

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Question number: 84

Appeared in Year: 2013

MCQ▾

Question

The equation of state of n moles of a non-ideal gas can be approximated by the equation,

Where a and b are constants characteristic of the gas. Which of the following can represent the equation of quasi-static adiabatic for this gas (Assume that CV, the molar heat capacity at constant volume, is independent of temperature)?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 85

Appeared in Year: 2013

MCQ▾

Question

A ray of light incident on a glass sphere suffers total internal reflection before emerging out exactly parallel to the incident ray. The angle of incidence was –

Choices

Choice (4) Response

a.

300

b.

750

c.

600

d.

450

Question number: 86

Appeared in Year: 2013

MCQ▾

Question

A black box (BB) which may contain a combination of electrical circuit elements (resistor, capacitor or inductor) is connected with other external circuit elements as shown below in the figure (a). After the switch (S) is closed at time t = 0, the current (I) as a function of time (t) is shown in the figure (b).

(b) In figure current as a function of time is shown.

From this we can infer that the black box contains –

Choices

Choice (4) Response

a.

A resistor and a capacitor in series

b.

A resistor and an inductor in series

c.

A resistor and an inductor in parallel

d.

A resistor and a capacitor in parallel

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