For single-slit diffraction of width a, angular position of m-th minimum:
Asin θ_m = m × 2λ/a
BNo formula
Csin θ_m = (m + 1/2) λ / a
Dsin θ_m = m λ / a
Answer & Solution
Correct answer: D. sin θ_m = m λ / a
Single-slit minima: a sin θ = m λ (m = ±1, ±2, ...). Note this is opposite of YDSE (which has bright at m λ); single slit has dark at m λ because of within-slit destructive interference.
Related questions
Blue sky seen through a rotating polaroid rises and falls in brightness. Sky light is:Two polaroids are set crossed. The light passing through both is:Ordinary lamp light passes through one polaroid. Its intensity drops to:Wiggle a string up and down and a wave runs along it. The displacement is at right angles The rainbow of colours you see on a CD comes from:Diffraction is shown by:Near the edge of a shadow you see alternate dark and bright bands. This is:In Young's pattern, consecutive bright fringes are: