Post-UTME Physics 2018 Objective — Question 6
Question 6 of 20 from the Post-UTME Screening (Post-UTME) Physics 2018 Objective paper, with the correct answer and a full explanation.
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Which of the following gives the correct expression for the second position of resonance in a closed tube?
- A. l = lambda/4
- B. l = 3lambda/4Correct
- C. l = lambda/4 (duplicate)
- D. l = 2lambda
Explanation
In a closed pipe, resonance positions occur at odd multiples of lambda/4; the second resonance position is at l = 3lambda/4.
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