Question # 1

The velocity of sound in air not effected by changes in

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Moisture contents in air

Temperature of air

The atmosphere pressure

The composition of air

Electric generators which convert mechanical energy into

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solar energy

thermal energy

kinetic energy

electrical energy

The law of electromagnetic induction is related to:

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Coulomb

Ampere

Faraday

Lenz

None of these

When a body is moving on a surface, the force of friction is called

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Static friction

Dynamic friction

Limiting friction

Rolling friction

If the mass of the simple pendulum becomes double, its time period

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increase

decreases

remains constant

none of them

To designate the voltage as low or 0 by a logic gate, the specified minimum value is:

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0.2 volt

0.8 volt

0 volt

2.0 volt

5.0 volt

Radio telescope is used to gather information from

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Earth

Moon only

Far side of the universe

Sea water

The distance covered by a body in unit time is called.

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Displacement

speed

Velocity

Both B and C

The amount of energy equivalent to 1 a.m.u is

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9.315 Mev

93.15 Mev

931.5 Mev

2.22 Mev

The definite number of significant figures in 5000 is:

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Four

Three

Two

One

Ethanol (alcohol) as a type of:

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Electric fuel

Bio fuel

Nuclear fuel

None of these

Which of the following is a state variable

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entropy

pressure

volume

all of them

In n-p-n transistor, emitter base junction is kept

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reversed

forward biased

may be reversed or may be forward biased

none of these

The charge carriers in gases are

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electrons

ions

protons

ions and electrons

The branch of physics which concerned with the ultimate particles of which the universe is composed is known as

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SolidState physics

Particle Physics

Nuclear Physics

Atomic Physics

In vibrational motion(SHM)

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P.E remains conserved

Average K.E remain constant

Neither P.E nor K.E remains constant

Total energy remains constant

We cannot utilize the heat contents of oceans and atmosphere because

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there is no reservoir at the same temperature

there is no reservoir at the temperature lower than any one of two

there is no reservoir at the temperature higher than any one of two

none of them

The body will move with terminal velocity when it acquires

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minimum speed

zero speed

maximum speed

none of them

Photoelectrons are emitted when ultraviolet light falls on:

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Casium

Silver

Potassium

Any of these

None of these

Viscosity of water is ______ that of air but ___ that of plasma.

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More, more

Less, more

Less, less

More, less

Amorphous solids are also called as

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crystalline solids

polymeric solids

glassy solids

any one of them

Force acting upon a charged particle kept between the plates of a charged condenser if F. IF one of the plates of the condenser is removed, force acting on the same will become

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Zero

F/2

F

2F

Matter is made up of very tiny particles called

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Atoms

Molecules

Ions

None of these

Alternating current can be transmitted:

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To long distance

At very high cost

At very low cost

Both (A) and (C)

Both (A) and (B)

A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:

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+5 x 10¹J

+5 x 10²J

+5 x 10³J

+5 x 10⁴J

In a voltmeter the conduction takes place due to

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Electrons only

Holes only

Electrons and holes

Electrons and ions

The relation between charge 'Q' and current 'I' is given by

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Q = I/t

Q = It

Q = I²t

Q = I²/t

A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?

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108 g

10.8 g

0.8 g

108/0.8 g

The ability of the body to return to its original shape is called

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deformation

stretching

compressing

elasticity

OP-AMP has the following input terminals

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one

two

three

four

The work done by a force, keeping an object in circular motion with constant speed is:

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Zero J

1 J

0.1 J

0.01 J

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