- #1

songoku

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- Homework Statement
- A sound wave of frequency 1100 Hz is travelling in air at the speed of 330 m s^(−1). What is

the phase difference between two points on the wave 1.0 m apart in the direction of the

wave?

A 0.60 π rad

B 0.67 π rad

C 0.80 π rad

D 1.3 π rad

- Relevant Equations
- phase difference = 2π . x / λ

v = λ.f

I find λ first and I get λ = 3/10 m

phase difference = ##\dfrac{2 \pi (1) }{\dfrac{3}{10}} = 6.7 \pi##

Answer key = B

What is my mistake?

Thanks

phase difference = ##\dfrac{2 \pi (1) }{\dfrac{3}{10}} = 6.7 \pi##

Answer key = B

What is my mistake?

Thanks