KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics: Questions 13 - 15 of 250

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Question number: 13

» Thermodynamics » Work in Thermodynamic Process and PV Diagrams

Appeared in Year: 2010

MCQ▾

Question

An ideal gas with constant heat capacity CV=32nR is made to carry out a cycle that is depicted by a triangle in the figure given below.

PV diagram of cycle ABC.

PV Diagram of Cycle ABC.

In figure a PV diagram of an ideal gas process is shown.

The following statement is true about the cycle –

Choices

Choice (4) Response
a.

The efficiency is given 1P1V1P2V2

b.

Heat absorbed in part AC is given by 2(P2V2P1V1)+12(P1V2P2V1)

c.

Net heat absorbed in the cycle is (P2P1)(V2V1)

d.

The efficiency is given by 112P1V1P2V2

Question number: 14

» Oscillations and Waves » Standing Waves in Strings and Organ Pipes

Appeared in Year: 2011

MCQ▾

Question

At 230C, a pipe open at both ends resonates at a frequency of 450 hertz. At what frequency does the same pipe resonate on a hot day when the speed of sound is 4 percent higher than it would be at 230C?

Choices

Choice (4) Response
a.

454 Hz

b.

446 Hz

c.

459 Hz

d.

468 Hz

Question number: 15

» Electrostatics » Electric Field

Appeared in Year: 2010

MCQ▾

Question

Consider a uniform spherical volume charge distribution of radius R. Which of the following graphs correctly represents the magnitude of the electric field E as a distance r from the center of the sphere?

Choices

Choice (4) Response
a.
 A graph of electric field vs a distance (Choice -A)

a Graph of Electric Field vs a Distance (Choice -A)

In diagram, graph of the magnitude of the electric field E verses a distance r from the center of the sphere is shown.

b.
 A graph of electric field vs a distance (Choice -B)

a Graph of Electric Field vs a Distance (Choice -B)

In diagram, graph of the magnitude of the electric field E verses a distance r from the center of the sphere is shown.

c.
 A graph of electric field vs a distance (Choice -C)

a Graph of Electric Field vs a Distance (Choice -C)

In diagram, graph of the magnitude of the electric field E verses a distance r from the center of the sphere is shown.

d.
A graph of electric field vs a distance (Choice -D)

A Graph of Electric Field vs a Distance (Choice -D)

In diagram, graph of the magnitude of the electric field E verses a distance r from the center of the sphere is shown.

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