Question # 1

Oil film floating on water exhibits colours due to

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Interference

Diffraction

Polarization

All of these

A man of 5000 kg moves with an acceralation of 1 ms-2 force acting on it is.

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5 N

500 N

50 N

5000 N

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

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Karachi

K-2

Murree

Lahore

One foot is equal to

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31.90 cm

30.48 cm

30.84 cm

84.30 cm

The ballistic missiles are used only for

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Long range

Short range

Medium range

Constant range

This is used for

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Co-efficient of friction

Co-efficient of expansion

Co-efficient of viscosity

Co-efficient of contraction

Who did give the correct formula for the speed of sound in air?

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Boyle

Laplace

Newton

Einstein

The measure of hotness or coldness of a substance is.

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Temperature

Heat

Internal energy

Energy

The dimensional unit of impulse is.

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[MLT]

[MLT-1]

[ML-1T-1]

[M-1L-1T-1]

Time period of simple pendulum only depends on

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Mass

Amplitude

Density

Length

the change in internal energy is defined as

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Q - W

Q-T

Q + P

Q - P

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

Which one of the scientist made some contribution to geometrical optics?

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Phythagoras

Archimedes

Euclid

Plato

The number of significant figure in 8.80 x 10⁶ kg is

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1

3

6

5

The area between velocity time graph and the time axis is numerically equal to.

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?Speed of object

Distance covered by the object

Average velocity of the object

Acceleration of the object.

A stationary waves is established din a string which vibrates in four segments at a frequency of 120 Hz, Its fundamental frequency is.

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15 Hz

30 HZ

60 Hz

480 Hz

Light waves emitted from a source spread in

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Specific direction

All direction

Upward direction

None of these

Which is unimportant in describing the satellites orbit.

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Distance of satellite from earth's center

Gravitational constant G

Mass of satellite

Mass of earth

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