Question

Pick out the correct statement in the following with reference to stationary wave pattern

• A. In a tube closed at one end, all the harmonic are present
• B. In a tube open at one end, only even harmonic are present
• C. The distance between successive nodes equal to the wavelength
• D. In a stretched string, the first overtone is same as the second harmonic
• E. Reflection of a wave from a rigid wall change the phase by ${45}^o$

Answer 1

The correct option is D In a stretched string, the first overtone is same as the second harmonic

$f_2=2f_1=$ First overtone or second harmonic
where 4 = fundamental tone or first harmonic.
In a stretched string, the first overtone is the same as the second harmonic.
So, option (d) is correct.