In a double-slit interference experiment

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

Problem

In a double-slit interference experiment, the separation between the slits is

1.0\times10^{-3}\text{ m}

, the wavelength of light used is

5.0\times10^{-7}\text{ m}

, and the distance of the screen from the slits is

1.0\text{ m}

. Find the distance of the first minimum from the centre of the central maximum. (1)

0.5\text{ mm}

(2)

0.75\text{ mm}

(3)

1.0\text{ mm}

(4)

0.25\text{ mm}