Question # 1

If the acceleration is 10 m/s2 and mass 10kg:

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F = 99N

F = 100 Kg

F = 100 m/s2

F =100 N

The study of internal structur eof Earth is called.

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Atomic Physics

Plasma Physics

Geo physics

Nuclear Physics

The centre of gravity of irregular shaped body can be found with the help of:

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Wedge

Meter rod

Plumb line

Screw gauge

The unit of heat capacity is:

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Jkg k

JK^-1

Jkg^-1K

J^-1kg^-1K^-1

According to Archimedes, upthrust is equal to

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Weight of displaced liquid

Volume of displaced liquid

Mass of displaced liquid

None of these

The product of force and displacement is called;

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Work

Efficiency

Power

Energy

Highly conducting state of matter is:

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Solid

Liquid

Gas

Plasma

Two equal but unlike parallel forces having different line of action produce:

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A torque

A couple

Equilibrium

Neutral equilibrium

Unit of strain is

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Nm

N

Both a and b

No unit

What is the effect of lubricicantion?

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Increase friction

No effect

Reduce friction

None

1000 liters is equal to:

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100 m³

1 m³

1 cm³

1 mm³

In liquids and gases the current is due to the motion of:

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Negative charges

Positive charges

Both positive and negative charges

None of these

If there is no extension in the spring then the position is called:

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Equilibrium position

unequilibrium

neutral equilibrium

stable equilibrium

The open switch Boolean expression is represented by:

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0

1

10

2

To hear echoes, the minimum distance of the obstacle from source of sound should be:

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10m

15m

17m

20m

The equivalent resistance of a parallel combination is

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equal to sum of all resistance

is greater than the largest resistance of combination

is smaller than the smallest resistance of combination

All of these

Hard disk is made of:

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Aluminium

Copper

Iron

Plastic

The current used in houses is:

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A.C.

Conventiona current

Current

D.C

When a heavy nucleus splits into lighter nuclei,the process would.

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Release nuclear energy

absorb nuclear energy

Release Chemical energy

Absorb Chemical Energy

Which instrument is used to detect current?

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Galvanometer

Voltmeter

Ammeter

Electroscope

If the field is stronger than lines of force are to each other:

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Far away

Separated

Closer

No effect

The half life of carbon -14 is:

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5730 years

5740 years

5750 years

5760 years

The maximum range of projectile is 100 km, Take 9=10 ms-2, the initial velocity of the projectile will be.

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1000 kms-1

1 kms-1

10 kms-1

100 kms-1

The study of fluid dynamics is

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Easy

Complicated

Impossible

None of these

Apparent weight of a man is in upward accelerated lift will

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Increases

Decreases

Remain same

Increases then decrees

The angle between circumference of a circle and center is

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The molecules of an ideal gas exert

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Force on each other

No force on each other

Large force on each other

Pressure on each other

The work done in gravitational field

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Depend upon the path

Does not depend upon the path

(+)ve

Zero

Which of following is irreversible process

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Slow compression of an elastic spring

Slow evaporation of substances in isolated vessel

Slow expansion of a gas

A chemical explosion

Minimum number of unequal forces whose vector sum can be zero are.

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5

4

3

2

Air blows from

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High pressure to low pressure

Low pressure to high pressure

Low temperature to high temperature

High temperature to low temperature

The resultant of two forces 3N and 4 N acting at right angle to each other is.

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5 N

6 N

1 N

7 N

Speed of sound in copper is

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38000 ms-1

3600 ms-1

3500 ms-1

3400 ms-1

Photo electrons are emitted y using visible light when the metal is.

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sodium

Copper

Nicked

Cobalt

The radius of 10th orbit in hydrogen atom is.

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0.053 nm

0.53 nm

5.3 nm

53 nm

Resistance tolerance for gold colour is.

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50%

30%

20%

5%

The direction of induced current is always so as to oppose the change which causes the current, this is the statement of

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Lenz's law

Faraday's law

Ampere's law

Coulomb's law

Output of D.C. motor is

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A.C. energy

Mechanical energy

Chemical energy

D.C. energy

An A.C. voltmeter reads 220 V, its peak value will be

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225 V

240 V

311.12 V

300 V

Photons emitted in inner shell transition are.

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Continuous X -rays

Discontinuous X rays

Characteristic X rays

Energetic X rays

Which is the most refined form of matter.

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Smoke

Fog

Light

Electron

Charge on positron is:

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Negative

Positive

Netural

None of these

In photovoltaic cell, current is directly proportional to.

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Wavelength of light

Intensity of light

Energy

Frequency of light

The domain theory of magnet is important to explain the behaviour of

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Diamagnets

Paramagnets

Ferromagnets

All of these