Question

define oscillation and amplitude ,frequency​

Answer 1

Oscillation:

One complete cycle of repetitive to and fro motion, from one extreme (maximum or minimum) to another (minimum or maximum) and back.

Amplitude:

Maximum displacement of an oscillation from an equilibrium (zero level) position, the difference between the zero level and peak or trough of a radio, sound, seismic, or any other wave.

Frequency​:

Rate of repetition of a cyclical or regular event, measured in 'hertz' or cycles per second.

Answer 2

$\huge \red{ \mathfrak{Oscillation:-}}$

Regular variation in magnitude or position about a central point, especially of an electric current or voltage.

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Amplitude

$\huge \red{ \mathfrak{Amplitude:-}}$

The angular distance of a celestial object from the true east or west point of the horizon at rising or setting.

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$\huge \red{ \mathfrak{Frequency:-}}$

The rate per second of a vibration constituting a wave, either in a material (as in sound waves), or in an electromagnetic field (as in radio waves and light).