O-LevelPhysicsWaves5054/12 · Oct/Nov 2019 · Q231 Mark
Here are four statements about wavefronts. 1 Wavefronts from a point source are straight lines. 2 Wavefronts from a point source are circular. 3 Wavefronts are parallel to the direction of energy movement. 4 Wavefronts are perpendicular to the direction of energy movement. Which two statements are correct?
A1 and 3
B1 and 4
C2 and 3
D2 and 4
✓ Correct answer
D: 2 and 4
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