JEE Main 2026 · 4 Apr · Shift 1 · Physics Q33

← JEE Main 2026 · 4 Apr · Shift 1

PhysicsSingle correct+4 / -1Question 33 of 75

A slit of width $a$ is illuminated by light of wavelength $\lambda$ . The linear separation between 1st and 3rd minima in the diffraction pattern produced on a screen placed at a distance $D$ from the slit system is ________.

\dfrac{D\lambda}a

1.5\dfrac{D\lambda}a

2\dfrac{D\lambda}a

3\dfrac{D\lambda}a

Answer and worked solution

Official answer: C

Single-slit minima sit at $y_n=\dfrac{nD\lambda}a$ .

Separation. $y_3-y_1=\dfrac{2D\lambda}a$ .

(C)

Topics:Diffraction

← Previous question Next question →

JEE Main 2026 · 4 Apr · Shift 1, Physics question 33