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Physics

Physics
Which colour has the highest frequency?

Violet
Green
Indigo
Red

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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
The force that keeps a body in a circular motion called

The centripetal force
The frictional force
All listed here
The centrifugual force

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Physics
A decibel is

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

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Physics
Electromagnetic waves are transverse in nature is evident by

Interference
Reflection
Polarisation
Diffraction

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Physics
The function of ball bearings in a wheel is :

To convert static friction into kinetic friction
To increase friction
To convert kinetic friction into rolling friction
Just for convenience

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