Physics
The force that keeps a body in a circular motion called

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

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Physics
Which one of the following is not a property of electromagnetic waves?

Electromagnetic waves are transverse waves
Oscillating electric field and magnetic field are perpendicular to each other.
Electromagnetic waves do not require a medium to propagate.
Electromagnetic waves do not show interference and diffraction.

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