wave interference

Question 1

define coherent

Answer 1

coherent means when the waves have the same frequency, same aplitude, and they are in phase

Question 2

when does constructve interference occur

Answer 2

this is when the waves arrive in phase and the waves equal 0 or wavelength

Question 3

when does destructive interference occur

Answer 3

this is when waves arrive in antiphase, and the waves equal half a wave length or a wavelength add hlf a wavelength

Question 4

what is path difference

Answer 4

this is the difference in how far waves have travelled

Question 5

what does princple of superposition state

Answer 5

this is when two waves or more waves cross at a point.