Monochromatic light of wavelength from two coherent slits reaches a point with a…

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

Problem

Monochromatic light of wavelength

600\,\text{nm}

from two coherent slits reaches a point

P

with a phase difference of

120^{\circ}

. Calculate the corresponding path difference

\Delta x

. (a)

400\,\text{nm}

(b)

200\,\text{nm}

(c)

600\,\text{nm}

(d)

100\,\text{nm}