Question

Which gives the frequency of the wave in terms of its peaks? A. the number of peaks passing a point per second B. the height of the peaks divided by the width of the crest C. the height of the tallest peaks D. the number of peaks per meter

Answer 1

The correct answer to the question is : A) The number of peaks passing a point per second.

EXPLANATION:

Generally frequency of a wave means number of waves corresponding  to that wave passing through a point in one second.

The number of peaks of a certain wave passing through a point indirectly gives number of waves passing through that point.

Hence, the first statement gives the perfect definition of frequency in terms of peaks.

Answer 2

The answer is A. The frequency of a wave is how many waves pass a point (measured in this case by how many peaks pass) in an amount of time (in this case 1 second)