Red light ( ) and violet light ( ) pass through the same narrow slit of width and…
PHYSICS · Single correct · A Level · Physics · Waves · Waves
Problem
Red light (λred=650nm) and violet light (λviolet=400nm) pass through the same narrow slit of width 0.50mm and form diffraction patterns on a distant screen. Which statement correctly compares the width of the central maximum produced by the two colors?
(a) The violet light produces a wider central maximum because its speed is greater in vacuum.
(b) The red light produces a narrower central maximum because its wavelength is longer.
(c) The red light produces a wider central maximum because its wavelength is longer.
(d) Both colors produce identical central maxima because the width depends only on the slit width.