Question # 1

The optical fiber is covered for protection by a

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Glass Jacket

Plastic Jacket

Copper Jacket

Aluminum Jacket

If an object is placed with in the focal length of a convex lens, its image is formed.

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Real

Inverted

Virtual

Smaller than object

The law of conservation of mass gives.

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Beronoulli's

Venturi relation

Torricelli's theorem

Equation of continuity

The direction of angular acceleration is

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Along the axis of rotation

Perpendicular to the axis of rotation

Opposite to axis of rotation

None of these

If the initial velocity of a projectile becomes doubled, the time of fight will be.

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Same

4 times

Double

3 times

The produce oscillation, body is pulled away from its

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Mean position

Extreme position

Both a and b

None of these

The curve representing an adiabatic process is called.

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An adiabatic

An isotherm

Both of these

None of these

The SI unit of power is

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Joule

Newton

Watt

Kilowatt

The frictional force is

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Conservative force

Non conservative force

Electric force

Magnetic force

In sonar we use

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Sound waves

Ultrasound waves

Microwaves

Radio waves

Close orbiting satellites orbit the earth at a height of about

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400 km

4000 km

400 m

400 cm

A bat finding its correct location by sending

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Matter waves

Ultrasonic waves

Infrasonic waves

electromagnetic waves

In reversible process the entropy of system.

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Remain constant

Decrease

Increase

Becomes zero

Einstein's theory gives us the physical picture of how the

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Body moves

Gravity works

Moment of inertia produced

Weightlessness creates

If the stream lines of fluid are forced closer together then.

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Speed of the fluid increases

Speed of the fluid decreases

Pressure of the fluid increases

Speed of the fluid remain same

When the rocket moves away from the earth, the work against gravity

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Remains constant

Varies directly with distance

Varies inversely with distance

Varies inversely with square of distance

Height of geo stationary orbit of the satellite above the earth is.

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300 km

250 km

400 km

None of these

A force of 10 N acts on a body of mass 5 kg in one second. The change in its momentum will be.

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10 kgms-1

50 kg ms-1

2 kg ms-1

20 kg ms-1

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11th Class Part 1 Physics Test Online MCQs With Answers

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