Question # 1

When a ray of light passes from a denser to a rare medium it;

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bends away form the normal to the interface

bends towards the normal

does no bend

non of the above

Multi-meter is also called.

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EVO

OVE

AVO

V0A

The examples of semi - conductors:

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sodium and potassium

calcium and potassium

Germanium and silicon

carbon and nitrogen

The working principle of transformer:

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Electromagnetic conduction

Electrostatic induction

Electric charge

Neutralization

The energy due to motion is called.

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Potential energy

Kinetic energy

Nuclear energy

Chemical energy

Pakistan made atomic explosion on:

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May 28,1996

May 28,1998

May 28, 1999

may 28, 2000

In P-type semi -conductior, most of the current is due to.

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Free electron

Holes

Positive ions

Heat

Pakistan institute of Nuclear science and technology was established in;

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1960

1965

1966

The Si unit of energy :

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meter per second

meter

joule

kilowatt hour

Pakistan launched its first rocket namely Rahber into space on:

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June 7,1972

June 7,1982

June 7,1962

June , 1979

The principal of light on whihc the fibre optics works is.

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Reflection

Refraction

Total internal reflection

Dispersion

The production of electricity from tides of water is called:

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Wind power

Thermal power

Tidal power

Nuclear power

If we increasing angle of incidence then at a particular angle incidence the angel of refraction is.

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45 ^o

60 ^o

30 ^o

90 ^o

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