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secondary 4 | Biology
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Nur Ayuni Yazid
Nur Ayuni Yazid

secondary 4 chevron_right Biology chevron_right Singapore

can someone explain how to get A as the answer, i got C for my answer instead

Date Posted: 7 months ago
Views: 48

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Lee Xinghui
Lee Xinghui's answer
2 answers (Tutor Details)
1st
Hi there! The path of the echo should be amended to be diagonally instead of straight to the wall and bounce back to Y diagonally because angle of incidence will equal angle of reflection for waves :)