A slit of width has light of frequency passing through it onto a screen away

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

Problem

A slit of width

0.010\,\text{mm}

has light of frequency

5.0\times10^{14}\,\text{Hz}

passing through it onto a screen

60\,\text{cm}

away. How wide is the central maximum? (

c=3.00\times10^8\,\text{m s}^{-1}

) (a)

0.12\,\text{cm}

(b)

7.2\,\text{cm}

(c)

1.8\,\text{cm}

(d)

3.6\,\text{cm}