A camera manufacturer wants to minimize reflection of light from a glass lens by…

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

Problem

A camera manufacturer wants to minimize reflection of

550\,\text{nm}

light from a glass lens by depositing a single transparent coating with index

n = 1.22

. What thickness should the coating have? (a)

92\,\text{nm}

(b)

113\,\text{nm}

(c)

138\,\text{nm}

(d)

225\,\text{nm}