Practice Questions on General Science - Physics
General Knowledge

Section-1: General Science - Physics Question - 21

Q21.

Radar is an object-detection system that uses radio waves to:

A.

locate geostationary satellites

B.

determine the range, altitude, direction, or speed of objects

C.

receive a signals in a radio receiver

D.

locate submerged submarines

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Section-1: General Science - Physics Question - 22

Q22.

Ferromagnetism occurs in:

A.

Brass

B.

Copper

C.

Nickel

D.

Zinc

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Section-1: General Science - Physics Question - 23

Q23.

A mirage is a naturally occurring optical phenomenon caused due to:

A.

equal heating of different parts of the atmosphere

B.

depletion of ozone layer in the atmosphere

C.

magnetic disturbances in the atmosphere

D.

light rays which are bent to produce a displaced image of distant objects or the sky

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Section-1: General Science - Physics Question - 24

Q24.

Transformers for use at power or audio frequencies typically have cores made of:

A.

iron

B.

silicon steel

C.

ferrite

D.

cobalt

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Section-1: General Science - Physics Question - 25

Q25.

Anaesthetics are derivatives of:

A.

Nitrates

B.

Polymers

C.

Allenes

D.

Fluorocarbons

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