Physics

Problem

The diffraction pattern of a light of wavelength

400 \text{ nm}

diffracting from a slit of width

0.2 \text{ mm}

is focused on the focal plane of a convex lens of focal length

100 \text{ cm}

. The width of the

1^{\text{st}}

secondary maxima will be: [Jan. 30, 2024 (I)] (a)

2 \text{ mm}

(b)

2 \text{ cm}

(c)

0.02 \text{ mm}

(d)

0.2 \text{ mm}