Question # 1

The temperature of gas is produced by

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At potential energy of its molecules

The kinetic energy of its molecules

The attractive force between its molecules

The repulsive force between its molecules

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

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Sinusoidal shape with amplitude A/3

Sinusoidal shape with amplitude A/2

Sinusoidal shape with amplitude A

Straight line

Absolute zero is considered as that temperature at which:

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All liquid become gases

All gases become liquid

Water freezes

None of these

The electric intensity at infinite distance from the point charge will be

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Infinite

Positive

Zero

Negative

An induced current can be produced by:

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Constant magnetic field

Changing magnetic field

Varying magnetic field

Constant electric field

None of these

Proton was discovered by Rutherford in

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1915

1906

1910

1920

When some compass needles are placed on a card board along a circle with the center at the wire, they will

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Point the direction of N-S

Set themselves tangential to the circle

Point in the direction of E-W

None of these

Point in direction of S-E

If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe

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increases

decreases

becomes zero

is conserved

A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be

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64 W

80 W

100 W

125 W

The unit of conductance is

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ohm

meter

mho

ohm-meter

The resistivity of a substance depends upon the

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length

mass

area

temperature

The fourth band is a:

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Silver band

Red band

Gold band

Either A or C

Either A or B

Which of the following material has smaller has life

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uranium

polonium

radium

radian

The shortest distance between two points directed from its initial point to final point is called:

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Velocity

Displacement

Speed

Distance

The intensity at a point due to a charge is inversely proportional to

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Amount of charge

Size of the charge

Distance between charge and the point

Square of the distance from the charge

None of these

An atom in which there is a resultant magnetic field, behaves like a tiny magnet and is called as

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magnetic

magnetic dipole

magnetic monopole

none of them

The number of input terminals of an op-amp is:

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One

Two

Three

Four

None of these

Two dissimilar metals joined at their ends kept at constant temperature constitute:

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Cell

Voltmeter

Thermocouple

Potentiometer

None of these

The materials in which valence electrons are bound very tightly to their atoms and are not free, are known as

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conductors

insulators

semi-conductors

all of them

The value of relative permittivity of different dielectrics are:

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Equal

Different

Greater than one

Smaller than one

Both (B) and (C)

A particle of mass 5.0 mg moves with a speed of 8.0 m/s. Its de-Brogile wavelength is

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1.66 m

1.66 x 10^-10m

1.66 x 10^-29cm

1.66 x 10^-29m

The resistance of the given conductor can be increased by

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Increasing the area

Changing resistivity

Decreasing the length

None of the above because change does not matter because in any case the volume remains the same

Matter is made up of very tiny particles called

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Atoms

Molecules

Ions

None of these

When a mass 'm' is pulled slowly through a distance 'x_o' , the elastic potential energy of the spring would be

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P.E=Kx²_o

P.E= 1/2kx_o

P.E=1/2Kx²_o

P.E=Kx²_o

Which one of the following is dimensionless.

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Acceleration

Velocity

Density

Angle

A the top of the trajectory of a projectile, the directions of its velocity and acceleration are

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Perpendicular to each other

Parallel to each other

Inclined to each other at an angle of 45°

Anitparallel to each other

When three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by them will be

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180 watt

10 watt

20 watt

60 watt

When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.

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Becomes half

Becomes zero

Ramains same

Becomes double

The restoring force always directed towards the

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extreme position

mean position

both of them

none of them

A full-scale deflection is obtained in a galvanometer with a current of few

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ampere

volts

milliampere

ohm

A magnetic force on an electron travelling with 10⁸ms^-1parallel to a field of strength 1 Wb m^-2is

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Zero

10⁵m

10^-10N

10⁸N

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