KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics: Questions 53 - 55 of 268

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Question number: 53

» Current Electricity » Series and Parallel Combinations of Resistors

Appeared in Year: 2011

MCQ▾

Question

Two batteries V1 and V2 are connected to three resistors as shown below.

Circuit diagram consist of two batteries and three resistors

Circuit Diagram Consist of Two Batteries and Three Resistors

In figure combination of three resistors are connected with two batteries.

If Equation and Equation the currentEquation . If Equation andEquation , the current Equation Now, if Equation andEquation , the current Equation will be –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 54

» Oscillations and Waves » Speed of a Wave

Appeared in Year: 2012

MCQ▾

Question

A body is executing simple harmonic motion of amplitude Equation and period T about the equilibrium positionEquation . Large numbers of snapshots are taken at random of this body in motion. The probability of the body being found in a very small interval Equation to Equation is highest at,

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 55

» Kinematics » Velocity-Time Graphs

Appeared in Year: 2012

MCQ▾

Question

A particle released from rest is falling through a thick fluid under gravity. The fluid exerts a resistive force on the particle proportional to the square of its speed. Which one of the following graphs best depicts the variation of speed v with time t is?

Choices

Choice (4) Response

a.

Graph of variation of speed with time- Choice A

Graph of Variation of Speed With Time- Choice A

In figure a graph of variation of speed v with time t is shown.

b.

Graph of variation of speed with time Choice B

Graph of Variation of Speed With Time Choice B

In figure a graph of variation of speed v with time t is shown.

c.

Graph of variation of speed with time Choice C

Graph of Variation of Speed With Time Choice C

In figure a graph of variation of speed v with time t is shown.

d.

 Graph of variation of speed with time Choice D

Graph of Variation of Speed With Time Choice D

In figure a graph of variation of speed v with time t is shown.

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