Page 14 - form 5 physics chapter 1

6.5 INTERFERENCE OF WAVES

State the When two waves interfered, the resulting displacement
Principle of of the medium at any location is the algebraic sum of
superposition of the displacements of the individual waves.
Waves

(a)Superposition Constructive
of two crests Interference

(b)Superposition Constructive
of two Interference
troughs

(c)Superposition Destructive
of a crest and Interference
a trough

What is ¾ Interference is the superposition of two waves

Interference of originating from two coherent sources.

Waves?

What is coherent ¾ The waves from coherent sources have the same

sources? frequency (f), same wavelength and constant phase

difference.

How does ¾ Wave interference occurs when two waves meet
interference while propagating along the same medium.
occur?
¾ When the two waves are superposed, interference
will occur either constructive interference or
destructive interference.

14