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The diagram shows a stationary wave on a string at one instant in time - AQA - A-Level Physics - Question 18 - 2021 - Paper 1

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Question 18

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The diagram shows a stationary wave on a string at one instant in time. P, Q and R are three points on the string. Which row is correct?

Worked Solution & Example Answer:The diagram shows a stationary wave on a string at one instant in time - AQA - A-Level Physics - Question 18 - 2021 - Paper 1

Step 1

P is in antiphase with R

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Answer

In a stationary wave, points that are in antiphase will oscillate in opposite directions. Therefore, point P is indeed in antiphase with point R.

Step 2

P has the same amplitude as Q

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Answer

Both P and Q are at corresponding positions in the wave pattern, indicating they will have the same amplitude since amplitude refers to the maximum displacement from the rest position.

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