Question # 1

The efficiency of a Carnot Heat Engine is 100% if temperature of sink T2 is.

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0 ^oC

0 K

0 ^oF

100 K

Turning of radio is example of.

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Mechanical resonance

Electrical resonance

Physical resonance

Biological resonance

Work is negative when angle between F and d is

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45^o

₀^o

90^o

180^o

Carnot cycle consists of.

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Two steps

Three steps

Four steps

Five steps

The dimensional of potential energy per unit volume are same as that of.

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Work

Pressure

Speed

Density

Sound waves are

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Electromagnetic waves

Transverse waves

Compressional waves

Matter waves

In case of point source the shape of wave front is.

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Plane

spherical

Circular

Eliptical

Increase in speed of sound for 1 ^oC rise in temperature is.

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0.61 ms-1

0.61 cms-1

61 ms-1

6.1 ms-1

The terminal velocity of a droplet falling down under gravity is directly proportional to the square of

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Its density

Its radius

Its viscosity

Its elasticity

The property of bending of light around obstacles is

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Interference

Diffraction

Polarization

Superposition

The speed of sound in air does not depend upon

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Temperature

Pressure

Density

Medium

A typical rocket consumes fuel about

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40000 Kgs-1

30000 Kgs-1

20000 Kg s-1

10000 Kgs-1

The light energy travels in space as waves was firstly proposed by

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Maxwell

Young

Einsten

Hydrogen

For an ideal gas, the internal energy is directly proportional to.

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Pressure

volume

Mass

Temperature

Which is not the essential component of a spectrometer.

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Collimator

Telescope

Turntable

Microscope

The pitch of sound deepens upon

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Intensity of sound

Loudness of sound

Wavelength of sound

Frequency of sound

The Unit of thermodynamic temperature is.

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C^o

F^o

K

None of these

What would encourage trade between two countries

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Different tax system

Frontier checks

National currencies

reduced tariffs

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