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Course: Oscillations and waves (Essentials) - Class 11th > Unit 3

Lesson 5: How do noise cancelling headphones work?
Science
Oscillations and waves (Essentials) - Class 11th
How do we know that the universe is expanding?
How do noise cancelling headphones work?
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Wave interference - 1

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Problem

Two children drop pebbles in a pond at two different places. The pebbles generate ripples along the surface of the water. These circular waves cross each other and create a pattern of interfering waves.
Which of the following statements best explains what happens to the original ripples after they move past one another?
Choose 1 answer: