State the mathematical relation that connects phase difference and path difference…

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

State the mathematical relation that connects phase difference

\phi

and path difference

\Delta x

for two coherent waves of wavelength

\lambda

. (a)

\displaystyle \phi = \dfrac{\lambda}{2\pi}\,\Delta x

(b)

\displaystyle \phi = \dfrac{\pi}{\lambda}\,\Delta x

(c)

\displaystyle \phi = \dfrac{2\pi}{\lambda}\,\Delta x

(d)

\displaystyle \phi = \dfrac{\Delta x}{\lambda}