In an experiment

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

Problem

In an experiment, a single slit of width

0.25\,\text{mm}

is placed

1.5\,\text{m}

in front of a screen. The measured distances from the central maximum to the first three minima are

5.0\,\text{mm}

10.1\,\text{mm}

, and

15.2\,\text{mm}

, respectively. Using these data, what is the best estimate of the wavelength of the light? (a)

1.7\times10^{-6}\,\text{m}

(b)

2.8\times10^{-7}\,\text{m}

(c)

8.4\times10^{-7}\,\text{m}

(d)

4.2\times10^{-7}\,\text{m}