Question # 1

The process followed by Newton for the determination of speed of sound in air is

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Adiabatic

Isothermal

Isobaric

Isochoric

The density of blood is nearly equal to.

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Air

Milk

Honey

Water

For an ideal gas, the internal energy is directly proportional to.

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Pressure

volume

Mass

Temperature

Energy dissipated usually appears as

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P.E.

Heat Energy

Chemical energy

Nuclear Energy

One complete round trip of a body is called

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Displacement

Time period

Vibration

Frequency

When distance is plotted against the force, it is taken along

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x-axis

y-axis

z-axis

None of these

P.E. of a spring is stored in

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Spring

mass

Both of them

None of these

The fringe spacing increases if we use.

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Yellow light

Green lgiht

Blue light

Red light

The unit of co efficient of viscosity in S.I system

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Kg -1 ms-1

Kg m-1 s-1

kg -1 m-1

Kg ms-1

If 20 waves passes through he medium in 2 sec of 10 ms-1 then he wavelength is.

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200 m

2 m

1 m

0.5 m

The minimum number of correctly positioned communication satellites to cover whole populated earth is.

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2

3

100

200

Dot product of two non zero vectors is zero it angle between them is.

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30^o

60^o

45^o

90^o

This is used for

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Co-efficient of friction

Co-efficient of expansion

Co-efficient of viscosity

Co-efficient of contraction

The resultant of two vectors having magnitude 12 N and 8 N can not be

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2 N

20 N

10 N

16 N

The ratio of size of image and size of object is

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Focal length

Magnification

Resolving power

Principle focus

The Detector in Photo phone is made up of.

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Cadmium

Germanium

Selenium

Silicon

Blood has density equal to that of

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Mercury

Sodium

Honey

Water

The centripetal force is always directed

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Away from the centre along the radius

Along the direction of motion

Opposite to the motion of the body

Towards the centre along the radius

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11th Class Part 1 Physics Test Online MCQs With Answers

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