A double-slit arrangement produces fringes apart on a screen away when light of…

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

Problem

A double-slit arrangement produces fringes

0.35\,\text{mm}

apart on a screen

1.5\,\text{m}

away when light of wavelength

650\,\text{nm}

is used. Calculate the separation between the slits. (a)

1.4\,\text{mm}

(b)

5.6\,\text{mm}

(c)

2.8\,\text{mm}

(d)

0.28\,\text{mm}