Question

Plane microwaves are incident on a long slit of width 5.0 cm. Calculate the wavelength of the microwaves if the first diffraction minimum is formed at θ = 30°.

Answer 1

Given:

Width of the slit, b = 5.0 cm

First diffraction minimum is formed at θ = 30°.

For the diffraction minima, we have:

bsinθ = nλ

For the first minima, we put n = 1.

5×sin30°=1×λ

⇒λ=52=2.5 cm

Therefore, the wavelength of the microwaves is 2.5 cm.

Answer 2

⭐《ANSWER》

$\huge\mathfrak\red {aNsWeR}$

↪Actually Welcome to the Concept of the Bragg's Equation

↪Since we know that , the bragg's equation is given as ,

〽2d sin⊙ = n /\

↪here , /\ = lambda ( wavelngth )