Question # 1

Frequency 'f' and time period 'T' are related as

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For a diatomic gas Cv= 5R/2 then gamma for this gas is.

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5/7

4/35

7/5

35/4

The error in speed of sound calculated by Newton at STP is about.

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0 %

14 %

15 %

16 %

Information carrying capacity of optical fibre called.

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Capacity

Band width

Immunity

Ability

The frictional effect between the different layers of fluid is called

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Terminal velocity

Stock's law

Viscosity

Surface tension

When average velocity becomes equal to instantaneous than body is called moving with.

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Instantaneous acceleration

Constant acceleration

Constant velocity

Variable velocity

when a ball is throng straight up, the acceleration at its highest point is.

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Upward

Down ward

Zero

Horizontal

A bat finding its correct location by sending

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Matter waves

Ultrasonic waves

Infrasonic waves

electromagnetic waves

Which remains constant in an adiabatic process.

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Volume

Pressure

entropy

temperature

At which place the motion of a simple pendulum will be slowest.

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Karachi

K-2

Murree

Lahore

Sound waves can not be

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Reflected

Refracted

Polarized

Diffracted

The lower reading of blood pressure is called.

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Systolic pressure

Diastolic pressure

Normal pressure

Non normal pressure

The mathematical expression for the restoring force is.

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F = kx

F = ma

F = dp/dt

F = -kx

Time taken by light to reach from sun to earth is.

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8 min 20 sec

7 min 20 sec

9 min 20 sec

None of these

An oscillating mass-spring system produces

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Sound waves

Electromagnetic waves

Light waves

Periodic waves

In case of point source the shape of wave front is

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Circular

Spherical

Elliptical

Square

When hot and cold water are mixed, the entropy.

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Decreases

Increases

Remain constant

Zero

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

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2

3

100

200

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