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

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Question number: 84

» Thermodynamics » Thermal Equilibrium

Appeared in Year: 2013

MCQ▾

Question

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

(P+n2aV2)(Vnb)=nRT

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.

T(Vnb)CVR=constant

b.

(T+abV2R)(Vnb)RCV=constant

c.

(T+n2abV2R)(Vnb)CVR=constant

d.

T(Vnb)RCV=constant

Question number: 85

» Ray Optics » Spherical Mirror

Appeared in Year: 2013

MCQ▾

Question

A ray of light incident on a glass sphere (refractiveindex3) 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

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

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).

 (a) An electric circuit consist of a black box (BB)

(A) an Electric Circuit Consist of a Black Box (BB)

(a) Figure shows a black box (BB) which may contain a combination of electrical circuit elements (resistor, capacitor or inductor) is connected with other external circuit elements.

(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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