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Physics

Physics
One billionth of a second is called

Nanosecond
Millisecond
Microsecond
Picoseconds

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Physics
Which waves cannot be transmitted through vacuum?

Electromagnetic
Sound
Heat
Light

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Physics
Friction can be reduced by changing from

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

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Physics
In quantum mechanics a particle is represented by a

Wave packet
Wave
None of these
Particle

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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 square of
directly proportional to
inversely proportional to

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Physics
A man stands in a lift which accelerates upwards. The resultant reaction force on the floor of the lift is

Same as the weight of the man
Less than the weight of the man
Zero
Greater than the weight of the man

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