Light from a 600 nm source goes through two slits 0.080 mm apart.What is the angular separation of the two first order maxima occurring on a screen 2.0 m from the slits?
A) 0.15°
B) 0.86°
C) 0.015°
D) 0.0075°
E) 1.75°

Question

Quizplus · Accepted Answer

The angular separation between the first order maxima can be found using the equation:
θ = λ/d
where θ is the angular separation, λ is the wavelength of light, and d is the distance between the two slits.
Plugging in the values, we get:
θ = (600 nm) / (0.080 mm) = 0.0075 radians
Converting to degrees, we get:
θ = 0.0075 radians * (180/π) = 0.43°
Since there are two first order maxima, the angular separation between them is twice the value we just calculated:
2θ = 0.86°
Therefore, the answer is B.

Light from a 600 Nm Source Goes Through Two Slits