A. sound waves
B. light waves
C. radio waves
D. x – rays
Correct Answer:
Option A – sound waves
Explanation
Sound is the only mechanical wave among the rest which are electromagnetic waves.
A. sound waves
B. light waves
C. radio waves
D. x – rays
Correct Answer:
Option A – sound waves
Explanation
Sound is the only mechanical wave among the rest which are electromagnetic waves.
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