A slit of width is placed from a screen and illuminated by light of wavelength

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

Problem

A slit of width

0.15\ \text{cm}

is placed

2.1\ \text{m}

from a screen and illuminated by light of wavelength

5\times10^{-5}\ \text{cm}

. The width of the diffraction pattern is (a)

70\ \text{mm}

(b)

0.14\ \text{mm}

(c)

1.4\ \text{cm}

(d)

0.14\ \text{cm}