Question

definitions for frequency,wavelength,speed of the light

Answer 1

Frequency : It is the number of occurrences of a repeating event per unit time. It is also called as Temporal Frequency.

Wave Lenght : The distance between a peak of a wave to the next corresponding peak.

Speed Of The Light : The distance light can travel in a unit of time through a given substance.

Answer 2

Frequency: number of occurences of a repeating unit per unit time (or)                                        repeatitions per unit time.

Wavelength: the distance two successive crests or two successive troughs                             (or) the distance between successive compressions and two                             rarefractions.
speed of light: the ratio of distance covered by light to the total time taken by                            it to cover that distance.