Question

A standing wave in a string 35 cm long has a total of six nodes including those at the ends. Hence, wavelength of the standing wave is:

• A. 5.8 cm
• B. 4.6 cm
• C. 10.4 cm
• D. 14 cm

Answer 1

Answer: (A)

5.8 cm

The length of string (L) =$n\lambda =35cm$

Where, $n$ is the number of nodes

and $\lambda$ is the wavelength of wave

$35cm=6x$$\lambda$

$\lambda$=$\frac{35}{6}$

$\lambda$$=5.8cm$

therefore the wavelength of standing wave is $5.8cm$