A source emitting light of wavelengths and is used in a double-slit interference…

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

Problem

A source emitting light of wavelengths

480\ \text{nm}

and

600\ \text{nm}

is used in a double-slit interference experiment. The separation between the slits is

0.25\ \text{mm}

and the interference is observed on a screen placed

150\ \text{cm}

from the slits. Find the linear separation between the first maximum next to the central maximum corresponding to the two wavelengths. (1)

0.36\ \text{mm}

(2)

0.18\ \text{mm}

(3)

0.72\ \text{mm}

(4)

0.98\ \text{mm}