Question # 1

A force of 100 N makes an angle of 60o with Y- Axis, its horizontal component is.

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50 N

60 N

70.7 N

86.6 N

The entropy of the universe with passage of time is.

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Increases

Decreases

Remain constant

Increases and decreases

Fringe spacing in Young's double slit experiment increases due to increase in.

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Slit separation

Wave length

Order of Fringe

Frequency of source

The largest satellite system is managed by

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116 countries

126 countries

136 countries

140 countries

The efficiency of a Carnot Heat Engine is 100% if temperature of sink T2 is.

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0 ^oC

0 K

0 ^oF

100 K

The optical fibre is covered for protection by

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Glass jacket

Plastic jacket

Steel jacket

Diamond jacket

Time period of simple pendulum depends upon

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Mass of pendulum

Weight of pendulum

Length of pendulum

Shape of pendulum

Sound waves are

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Electromagnetic waves

Transverse waves

Compressional waves

Matter waves

The work done in gravitational field

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Depend upon the path

Does not depend upon the path

(+)ve

Zero

The force and torque are analogous to

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Velocity

Mass and weight

Moment of Inertia

Each other

Entropy of measure of.

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Internal energy of system

Order of system

Disorder of system

Potential energy of system

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

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Force

Momentum

Energy

Power

The equations of motion hold good for

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Variable acceleration

Uniform acceleration

Centripetal acceleration

All of these

The state of human blood flow can be found by using.

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Newton's formula of speed of sound

Interference of sound

Phenomena of beats

Doppler's effect of sound

The regular or steady flow of fluid is called

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Stream line

Turbulent flow

Average flow

None of these

An oil film on water surface shows colour due to.

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Diffraction

Interference

Polarization

Dispersion

Which one is a conservative force

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Elastic spring force

Air resistance

Frictional force

Tension in the spring

The magnifying power of an astronomical telescope is 10. If the focal length of objective is 100 cm, then what is the focal length of eye piece.

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10 cm

100 cm

1000 cm

5 cm

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