Question

The loop length of a standing wave is 6cm. what is the phase difference between the two points separated by a distance of 2 cm ​

Answer 1

$\huge\underline\red{Solution:}$

Δϕ=90

∘

=

2

a

Δx=0.8m

we know that Δϕ=

α

2π

×Δx

So λ=

Δϕ

2π×Δx

=

π/2

2π×0.8

⇒

λ=3.2m

v=120Hz & v=vλ

velocityv=120×3.2=384m/s!