Question

The figure below shows pressure variation in two different sound waves in air with time at a given position. Both the figures are drawn to the same scale.

Which of the following statements is true?

• A. Wave $1$ has lower frequency and smaller amplitude compared to wave $2$
• B. Wave $1$ has higher frequency and greater amplitude compared to wave $2$
• C. Wave $1$ has shorter wavelength and greater amplitude compared to wave $2$
• D. Wave $1$ has shorter wavelength and smaller amplitude compared to wave $2$

Answer 1

Answer: (D)

As, Amplitude $\propto$ Maximum pressure and Wavelength $\propto$ Time duration for $1$ complete
So, wave $1$ has shorter wavelength and smaller amplitude compared to wave $2.$