At a certain point on the interference screen

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

Problem

At a certain point on the interference screen, the waves from the two slits arrive with a path difference of

1.5\,\mu\text{m}

. The light used has wavelength

500\,\text{nm}

. Determine the phase difference between the two waves (expressed in radians). (a)

4\pi\ \text{rad}

(b)

3\pi\ \text{rad}

(c)

6\pi\ \text{rad}

(d)

2\pi\ \text{rad}