Question # 1

Ratio of milimeter to micrometer is

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1000 m

0.001 meter

1000

0.001

If a body does not change its position with respect to some fixed point, then it will be in a state of.

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Motion

Uniform motion

Rest

Variable motion

An object of mass 1 kg placed at earth's surface experience a force of.

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1 N

9.8 N

100 N

Any Value

A ball is droped from the top of a tower, the distance covered by it in the first second is.

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5 m

10 m

50 m

100 m

A car is moving with velocity of 10 m/s . If it has acceleration of 2 m/s2 for 10 seconds. What is final vlocity of the car.

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20 m/s

10 m/s

30 m/s

15 m/s

amount of substance in terms of numbers is measured in

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Gram

Mole

Kilogram

Newton

A ball is throuwn straight up, what is the magnitude of acceleration at the top of its path.

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9.8 m/s2

zero

19.6 m/s2

4.9 m/s2

Gradient of the distance -time graph is equal to the

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Distance covered

Acceleration

Speed

Velocity

At the fairground, the force that balances your weight is

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Gravitatinal force

Electrostatic force

Centripetal force

Frictional force

Inertia of a body is related to which of the following quantitiies

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Friction

Force

Mass

Weight

Thrust force is a consequence of which law of motion.

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First

Second

Third

Fourth

In totally reflecting prism one angle is of 90^o, and other two angles are of:

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30^o,30^o

45^o,90^o

45^o,45^o

40^o,40^o

Which is not an e.m.f source:

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Generator

Solar cell

Battery

Rheostat

When resistances are connected in parallel, the current passing through them is:

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Same

Zero

Different

Infinite

The coulomb's law is valid for the charges which are:

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moving and point charges

moving and non-point charges

stationary and pont charges

stationary and large size charges

Wave equation is defined as:

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f = Tλ

f = V λ

V = 2fλ

V = fλ

The pitch of a sound is most closely related to its:

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Wave form

Period

Amplitude

Frequency

1 nano farad is equal to:

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1 x 10^-12 F

1 x 10⁹F

1 x 10^-9F

1 x 10^-6F

The speed of sound in a liquid is …………..than that in gases:

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Ten times

Fifteen times

Five times

Two times

Which of the following reasons increase the importance of computer?

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Speedy

Long time storage of memory

Quick decision

All of these

The unit of potential difference is:

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Volt

Coulomb

Ampere

Joule

Nuclear fission was first observed in

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1936

1937

1938

1939

The ability of reveal the minor details of an object under examination is called.

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Resolving power

Magnification

Scattering

Reflection

When water falls from tap, its cross sectional area decrease due to.

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Decrease of speed

Increase of speed

Air pressure

Gravity increase

A body covers a distance of 10 m in 1 sec with a constant velocity of 10 ms-1 , Acceleration produced by the body is.

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0 ms-1

2 ms-2

5 ms-2

10 ms-2

The efficiency of diesel engine is about

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25 % to 30%

35% to 40%

40% to 50%

50% to 60%

An ideal reversible heat engine has

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100% efficiency

Highest efficiency

80%

90%

the length of simple pendulum of time period 1 second is

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2 m

1 m

0.5

0.25 m

Which one of the scientist made some contribution to geometrical optics?

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Phythagoras

Archimedes

Euclid

Plato

If heat engine absorb 400 J and rejects 200 J heat energy, its efficiency will be.

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25%

50%

70%

100%

The unsteady flow of a fluid is called

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Stream line

Turbulent flow

Average flow

Viscous flow

Angular velocity determines, How fast or, How slow a body is

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Accelerating

Vibrating

Rotating

Oscillating

Which of the following is not directed along the fixed axis of rotation.

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Angular displacement

Angular momentum

Centripetal acceleration

Angular acceleration

An ECG records the _____ between points on human skin generated by electric process i the heart.

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Heart beat

Pulse rate

Pressure

Voltage

The particles equal in mass but greater than proton are.

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Mesons

Baryons

Leptons

Hadrons

The device which allows only the continuous flow of AC through it is.

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Inductor

Battery

Thermistor

Capacitor

The chargeless region after formation of Pn junction is called:

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Free region

Depletion region

Field region

U.V region

The uncertainty principle was given by

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De-Broglie

Heisenberg

Einstein

Max Planck

By modern system of NAVSTAR, the speed any where on the earth can be determined to accuracy about.

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20 ms-1

10 ms-1

2 cms-1

2 ms-1

The working principle of transformer is.

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Self induction

Faraday's law

Mutual induction

Electromagnetic induction

The wavelength associated with the protons moving at speed of 40 m/s is.

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7.20 nm

9.02

15.7 nm

17.3 nm

Magnetic induction can be measured in units of.

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Tesla

Gauss

Weber/m2

All of the above

Lorentz force means the force acting on a particle, which is

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Magnetic force only

Electric force only

Sum of electric and magnetic force

None of these

Which material should be inserted between the plates of a capacitor in order to increase its capacitance.

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Copper

Mica

Iron

Tin