Question # 1

The dimension of power is

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MLT-1

ML2T-2

ML2T2

ML2T-3

The mechanism of transports energy of all the waves is

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Different

Same

Complicated

Easy

One complete round trip of a body is called

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Displacement

Time period

Vibration

Frequency

When velocity time graph is a straight line parallel to time axis then

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Velocity is zero

Acceleration is constant

Acceleration is zero

Velocity is variable

In thermodynamics system internal energy decrease by 100 J and 100 J of work done on the system then heat lost will be.

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Zero

100 J

200 J

-200 J

In stationary waves the points which always remain at rest are.

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Nodes

Antinodes

Crest

Trough

A cycle of petrol engine undergoes

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Two process

Three process

Four process

single process

If heat is added to a system, then its entropy will.

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Increases and positive

Decrease and positive

Increases but negative

Decreases but negative

The internal energy of system does not depend on

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Temperature

Pressure

Path

Final and initial state

When two identical waves superimposed, which can change.

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Wave length

Frequency

Velocity

Amplitude

The optical fibre is covered for protection by

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Glass jacket

Plastic jacket

Steel jacket

Diamond jacket

The frequency of waves produced in microwave oven is

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1435 Hz

2450 MHz

1860 MHz

2850 Hz

2 radian = ____

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2 m

4 m

57.3 m

114.6 m

The equations of angular motion hold only in case when the axis of rotation is

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Moving

Fixed

Both a and b

None of these

According to first law of thermodynamics the quantity which is conserved.

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Force

Momentum

Energy

Power

Average acceleration is a

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Scalar quantity

Vector quantity

(-) ve quantity

None of these

The unit of solar light inversely is

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Watt

kW m-2

Watt m-2

1 m2

Hygen's principle is used for.

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Explain polarization

Locate the wave front

Find the speed of light

Find the index of refraction

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11th Class Part 1 Physics Test Online MCQs With Answers

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