Monochromatic red light ( ) and monochromatic blue light ( ) are each sent
PHYSICS · Single correct · A Level · Physics · Waves · Waves
Problem
Monochromatic red light (λ=650 nm) and monochromatic blue light (λ=450 nm) are each sent, one at a time, through the same single slit onto a distant screen. Which statement best describes how the position of the first diffraction minimum on the screen compares for the two colors?
(a) It is at the same distance from the central maximum for both colors.
(b) Its location depends only on slit width, so wavelength has no effect.
(c) It is farther from the central maximum for the red light than for the blue light.
(d) It is closer to the central maximum for the red light than for the blue light.