Question # 1

Direction of a vector in space requires

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Two axis

Three axis

Four axis

Both a and b

The unit of solar light inversely is

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Watt

kW m-2

Watt m-2

1 m2

Efficiency of a heat engine working between 27 ^oC and 32 ^oC will be.

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50%

90%

40%

62%

For maximum range the angle of projection must be

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30^o

45^o

60^o

90^o

The SI units of flow rate are.

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m2s-1

m3s-2

m3s-1

m2s-2

The distance between two consecutive wave front is equal to

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One wave length

Two wave length

Half wave length

Three wave length

The dimension of pgh has same as that of

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Work

Energy

Pressure

Mass

The formula of centripetal acceleration is

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Value of triple point of water is given as.

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Zero K

100 K

273.16 K

373.16 K

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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 efficiency of heat engine whose sink is at 17 ^oC and source at 200 ^oC is.

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38%

63%

80%

90%

The magnitude of A will be

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Zero

A²

1

A

3 Joules of work id done is 3 seconds, then power

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6 Watt

1 Watt

3 Watt

2 Watt

A ray of light is a line

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Parallel to wave front

Normal to wave front

Anti-parallel to wave

Any one of these

the acceleration of a body having SHM, depends upon its.

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Time period

Amplitude

Frequency

Displacement from mean position

The Detector in Photo phone is made up of.

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Cadmium

Germanium

Selenium

Silicon

The time rate of change of angular displacements called.

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Linear velocity

Linear speed

Angular velocity

Angular speed

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11th Class Part 1 Physics Test Online MCQs With Answers

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