Question

if the fundamental frequency of a certain string is 84 hz, what is the frequency of the second harmonic? 42 hz 84 hz 126 hz 168 hz

Answer 1

Answer: The frequency of the second harmonics is 168 Hz.

Explanation:

Fundamental frequency is the frequency associated with the ground state energy level. It is denoted by $f_0$

Second harmonic frequency is the frequency associated with the second energy level where n = 2. It is denoted by $f_1$

The relationship between fundamental and second harmonic frequency is:

$f_1=2f_0$

We are given:

$f_0=84Hz$

Putting value in above relationship, we get:

$f_1=2\times 84=168Hz$

Hence, the frequency of the second harmonics is 168 Hz.

Answer 2

Fundamental frequency, f₀ = 84 Hz

Second harmonic is  2f₀ = 2* 84 Hz = 168 Hz