Question

g ellow light is incident on two parallel slits. the pattern seen on a screen behind the grating consists of three yellow spots, one at zero degrees (straight through) and one each at –45. you now add red light of equal intensity, coming in the same direction as the yellow light. the new pattern consists of

Answer 1

Since the two sources of light do not influence each other, the pattern will consist of a superposition of a yellow-light pattern and a red-light pattern. Since red light has a greater wavelength than yellow light, its bright spots (and dark spots) will have a greater spacing than yellow

Step-by-step explanation:

n this case, the new pattern consists of orange spot [red + yellow] at 0o because

there is always a centeral maximum for each wavelength of lght. The seperation

distance between the peaks of the subsequent maxima varies directly with the wavelength

of the light. Hence, the red spots are slightly further out than the yellow spots.