A soap bubble (index of refraction ) has a uniform thickness of and is illuminated by…

PHYSICS · Single correct · CBSE · Physics · Wave Optics · Wave Optics

Problem

A soap bubble (index of refraction

n=1.33

) has a uniform thickness of

120\,\text{nm}

and is illuminated by white light at normal incidence in air. Which of the following wavelengths in air will be most strongly reflected? (a)

480\,\text{nm}

(b)

640\,\text{nm}

(c)

320\,\text{nm}

(d)

720\,\text{nm}