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Physics

Physics
Magnetism at the centre of a bar magnet is

minimum
zero
maximum
minimum or maximum

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Physics
A decibel is

A measure of sound level
The wavelength of noise
A musical note
A musical instrument

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Physics
Electric Motor converts ________ energy to mechanical energy

Mechanical
Sound
Chemical
Electrical

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Physics
Intensity of sound at a point is ____ its distance from the source.

directly proportional to square of
inversely proportional to
inversely proportional to square of
directly proportional to

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Physics
The temperature of a liquid is 32° F. What is its temperature in Celsius scale?

0° C
100° C
32° C
212° C

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Physics
Friction can be reduced by changing from

Static to Dynamic
Rolling to Sliding
Sliding to Rolling
Dynamic to Static

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