In an experiment

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

Problem

In an experiment, the first diffraction minimum produced by green light of wavelength

550\,\text{nm}

is observed

4.0\,\text{mm}

from the central maximum on a screen

1.2\,\text{m}

away from the slit. What is the slit width? (a)

0.082\,\text{mm}

(b)

0.33\,\text{mm}

(c)

0.17\,\text{mm}

(d)

0.017\,\text{mm}