WAEC Physics 2017 Objective — Question 33
Question 33 of 50 from the West African Examinations Council (WAEC) Physics 2017 Objective paper, with the correct answer and a full explanation.
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As the air column of length L in an air pipe decreases, the frequency of the stationary wave emitted
- A. A. decreases
- B. B. increasesCorrect
- C. C. varies as L²
- D. D. varies as √L
Explanation
As the length of the air column, L, in an air pipe decreases, the frequency of the stationary wave emitted increases (frequency is inversely proportional to length).
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