Page 197 - text book form physics kssm 2020

Chapter 5
Waves
Drawing Diagram of Refl ection of Water Waves Video on completing diagram
Figure 5.30 shows the steps to draw a diagram of refl ection of of refl ection of wave
water waves.

http://bt.sasbadi.com/p4191

Plane reflector

Incident wave

B

i r
4

N
A 1 2 3 C

Step 1 Draw an arrowed line AB perpendicular to incident wavefront to represent the direction of
propagation of incident wave.

Step 2 Draw the normal BN which is perpendicular to the plane refl ector.

Step 3 Draw an arrow BC with the condition angle CBN is the same as angle ABN to represent the
direction of propagation of refl ected wave.

Step 4 Draw lines perpendicular to BC to represent refl ected wavefronts. Th e refl ected wavelength
must be the same as the incident wavelength.

Figure 5.30 Th e steps to draw refl ection of water waves

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