JEE Main202427 Jan 2024Evening ShiftPhysicsWave OpticsActual
A parallel beam of monochromatic light of wavelength 5000 A o is incident normally on a single narrow slit of width 0 . 001 mm . The light is focused by convex lens on screen, placed on its focal plane. The first minima will be formed for the angle of diffraction of ______ (degree).
Correct answer
0
Step-by-step solution
The condition for the first minima in the single slit diffraction experiment can be written as asin θ = λ . . . 1 Equation (1) implies that sin θ = λ a = 5000 × 10 - 10 1 × 10 - 6 = 1 2 ⇒ θ = 30 °