Test Index

JAMB Physics 2013 Paper

Question : 23

Total: 43

Solution:

Concept:

The fifth overtone is the sixth harmonic, so its frequency is six times the fundamental frequency.

Explanation:

The fundamental frequency is

f_0 = 450\ \mathrm{Hz}

In a sonometer, each overtone increases the harmonic number by 1.

First overtone

= 2f_0

Second overtone

= 3f_0

Fifth overtone

= 6f_0

Therefore:

f = 6 \times 450\ \mathrm{Hz}

f = 2700\ \mathrm{Hz}

Answer:

2700\ \mathrm{Hz}

(Option A).

Go to Question:

Prev Question

Next Question