Question # 1

For maximum linear distance of travel, a projectile must be fired at an angle of

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0°

45°

90°

60°

Fluids can transmit:

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Transverse wave

Compressional wave

Both of them

None of them

The system international (SI) is built from _______ kind of unites

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Two

Three

Four

Five

The restoring force is ______ amd opposite to the applied force within _____:

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Equal, elastic limit

Different, the walls of the laboratory

Different, elastic limit

None of these

In a three phase a.c. generator, there are

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2 coils

3 coils

1 coild

No coil

The force exerted by the fluid in a hydraulic pump on the piston is 10 cm², the fluid pressure on the piston is, in N/cm²

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20

200

2000

20,000

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:

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0.5 J

2 J

0.25 J

1 J

Density is defined as:

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Mass per volume

Volume per mass

Mass X volume

Mass per length

At high altitude the blood oozes out of the nose and ear because

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The blood pressure increase at high altitudes

The percentage of oxygen in the air increase

The atmospheric pressure decrease there

The density of blood decrease at high altitudes

The device which can convert heat energy into electrical energy is called:

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Thermistor

Thermometer

Thermostat

Thermocouple

Both (C) and (D)

The magnitude of induced emf depends upon the:

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Rate of decrease of magnetic field

Rate of change of magnetic field

Rate of increase of magnetic flux

Constancy of magnetic field

None of these

When a bicycle is in motion, the frictional forces exerted by the ground are

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In the forward direction on both the wheels

In the backward direction on both the wheels

In the forward direction on the front wheel and the backward direction on the rear wheel

In the backward direction on the front wheel and the forward direction on the rear wheel

An induced current can be produced by

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Constant magnetic field

Changing magnetic field

Varying electric field

Constant electric field

None of these

0.0001210 has ____________ significant figures.

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Four

Three

Seven

Eight

A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

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1310 W

670 W

810 W

1210 W

A ball is dropped vertically down and it takes time t to reach the ground. At time t/2

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The ball had covered exactly half the distance

The velocity of the ball was V/3 where V is the velocity when it reached the ground

The ball had covered less than half the distance

The ball had covered more than half the distance

(CRO) Cathode ray oscilloscope is a device used for high speed

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velocity

graph plotting

time-velocity

none of these

Fidelity refers to

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Reproduction of original sound

Reproduction of original image

Reproduction of music

Reproduction of a CD from original copy

A convex lens acts as diverging lens when the object is placed:

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Between F and 2F

At 2F

With focal length

Beyond 2F

The time taken to complete one vibration is called:

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Frequency

Amplitude

Time

Time period

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

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frequency of S.H.M

period of S.H.M

wave form

none of them

A virtual image is formed when object is placed:

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Within focal length of a convex lens

Near the focal point of a concave lens

Both A and B

Away from 2F of a convex lens

The solids which has structure in-between order and disorder are called

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amorphous solids

polymeric solids

crystalline solids

all of them

Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at

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subsonic speed

sonic speed

super sonic speed

any one of them

When brakes are applied to a fast moving car, the passenger will be thrown:

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Forward

Backward

Downward

none of these

The pattern of crystalline solid is:

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One dimesional

Two dimensional

Three dimensional

Either (A) or (B)

None of these

Teh consumption of energy by a 1000 watt heater in half an hour is:

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5 Kwh

0.5 Kwh

2.5 Kwh

3.2 Kwh

Work done along a closed path in a gravitational field is:

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Maximum

Minimum

Zero

Unity

A hole in p-type my be due to:

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Trivalent impurity

Breking of some covalent bond

Pentavalent impurity

Germanium

Either (A) or (B)

The consumption source if energy is:

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Energy from blomass

Hydroelectric energy

Geothermal energy

None of these

The pressure exerted by the gas is

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directly proportional to the P.E

inversely proportional to the P.E

inversely proportional to the K.E

directly proportional to the K.E

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