Answer : Question 32

Answer : Question 32 ( Interference)

a) Alternating loud and soft sound

b) * coherent source provides – constant phase difference when the two waves

interfere

*the same kind of interference, whether constructive/destructive interference will

occur at the same place all the time

*therefore the interference pattern of alternating loud and soft sound can be heard

c) ax = λD

λ = ax/D

= 0.6 x 2.4 / 3

= 0.48 m