1)
Frequency: Number of complete cycles per unit time is termed as frequency.
Frequency helps us understand how fast or slow any the oscillation happens.
For any Oscillation frequency is given by:
f = 1/T {T is the time period of oscillation}
2)
Wave: Wave is a disturbance in the medium, sometimes described by periodic wave equations like...
Wave is way of energy transportation without transferring the medium.
3)
Images: Image is visual representation of something by several means an image can be produced...
by an artist, by optical objects like Mirrors, lenses, shadow imaging etc.
for optics Image is a virtual or real representation of of an object placed near the optical devices.
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