Wave Mechanics Vibration Of String Question 28

Question: Length of a string tied to two rigid supports is 40 cm. Maximum length (wavelength in cm) of a stationary wave produced on it is

[AIEEE 2002]

Options:

A) 20

B) 80

C) 40

D) 120

Show Answer

Answer:

Correct Answer: B

Solution:

In fundamental mode of vibration wavelength is maximum

Therefore $ l=\frac{\lambda }{2}=40cm\Rightarrow \lambda =80cm $