KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics: Questions 13 - 15 of 268

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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 Equation 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 Equation

b.

Heat absorbed in part AC is given by Equation

c.

Net heat absorbed in the cycle is Equation

d.

The efficiency is given by Equation

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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