Correct Answer: Option B

Explanation

For a closed pipe, only odd harmonics are present. first overtone frequency is 3f\(_o\), 2\(^{nd}\) overtone frequency is 5f\(_o\) etc.

4\(^{th}\) overtone frequency = 9f\(_o\)

900 =  9f\(_o\)

f\(_o\) = \(\frac{900}{9}\) = 100Hz

There is an explanation video available below.

• Hii, Waec would be starting on the 25th animal husbandry, in which I’m offering but I’m also writing Jamb on... Answer this

  1 Answers   ·   1 hour ago
• Part of germinating plant that bring shoots? Answer this

  1 Answers   ·   Biology   ·   2 days ago
• which app can I join biochemistry online? Answer this

  1 Answers   ·   Biological Science   ·   3 days ago