Question # 1

The surface of a liquid is somewhat similar to a stretched membrane because.

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There is an elastic stress in the surface

Tension in the surface increases if the area is increased

The surface has a natural tendency to contract

Ripples can be produced on the surface

A point mass moves through a circular arc of length 'l' and radius 'r' in time 't' what is the angular velocity about the centre of the circle.

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i/rt

r/it

2/rt

rt

Force acting on a test charge between the plates of a parallel plate capacitor is F. If one of the plates is removed teh force on the same test charge will be.

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Zero

F/2

F

2 F

The direction of force on a moving negative charge will be.

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Opposite to that of positive charge

Similar to that of positive charge

At right angel to the positive charge

Parallel to the positive charge

Which of the following materials has highest magnetic suscaptibility.

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Uranium

aluminium

Platinum

Sodium

The SI unit of equivalent dose is

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Seivert

Gray

Radian

Rem

Which of the following electron wavelength is used in electron microscope.

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Short

Extremely short

Large

Moderate

What for is a modulator circuit used.

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To eliminate carrier waves

To superpose the radio frequency signal on the carrier waves

To transmit the signal

To create sound waves

The resistance offered by one cubic meter of a substance is known as.

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Reactance

Conductance

Conductivity

Resistivity

The speed of a sound wave is independent of

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Nature of medium

Pressure

Temperature

Mass and energy

In a half wave rectifier the rms value of the A.C. component of the wave is.

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Less than D.C. value

Great her than D.C. value

Equal to D.C. value

Zero

If the wave length of a wire is 1 cm and its period is 0.02 s, the velocity of the wave will be

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20 cm s-1

50 cm s-1

60 cm s-1

100 cm s-1

The internal resistance of a primary cell depends upon the.

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Current dawn form the cell

Concentration of the solution

distance between cell electrodes

All of the above

What kind of movement is dictated by the laws of thermodynamcis.

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Energy motion

Heat work

Light heat

Energy light

Bernoulli's equation is Applica table to points

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In a steady flowing liquid

In a streamline

In a straight line perpendicular to steamline

In any non viscous liquid

Which principle is in effect when a ship displaces ocean water.

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Bernouli's

Pascal's

Hook's

Archimedes

Which type of oscillations produce resoncance.

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Free

Forced

Damped

All of these

A sonometer or audiometer is a device based on the principle of.

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Resonance

Beats

Overtones

Harmonics

If a gymnast sitting on a rotating stool with his arms out stretched lowers his arms.

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The angular speed increases

The angular speed decreased

The angular speed becomes zero

The angular speed becomes constant

Nuclear force as compared to electrostatic force is.

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Weaker and long range

Weaker and short range

Stronger and longer range

Stronger and short range

Which quantity is common for systems in thermal equilibrium.

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Heat

Temperature

Momentum

Specific heat

In CC configuration voltage gain is.

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Less than one

More than one

One

Zero

During the projectile motion, the horizontal component of velocity.

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Changes with time

Becomes zero

Does not change but remains constant

Increases with time

Two convex lens focal length 'f' use din combination become telescope. When the distance between them is.

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1

4f

2f

f/2

The part of theory of relativity which deals with accelerated bodies is called.

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special theory of relativity

General theory of relativity

Lorentz's theory of relativity

Galilean theory of relativity

The binding energy per nucleon for uranium is about.

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7.7 MeV

9.6 MeV

13.6 MeV

21.6 MeV

A radiation spectrum which is continuously distributed over a frequency region without being broken up into lines or bands is known as.

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Continuous spectrum

Band spectrum

discrete spectra

Absorption spectrum

Which of the following quantities is not changed during refraction of light.

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Its direction

Its speed

Its frequency

Its wavelength

As a positively charged rod is brought closer and closer to a positively charged electroscope the gold leaf.

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diverges

Converges

is neutralized

Is unaffected

Who originated the idea of heat death of the universe is 1852

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Lord Kelvin

James thomson

John Thomson

Saadi Carnot

Which of the following is the ability to hold an electric charge in electromagnetism.

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Resistance

Impedance

Inductance

Capacitance

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