1. Using the attached image titled "1" A double-slit apparatus is set up as shown. Green light (wavelength= 500nm) is used to form the interference pattern. The green light is then replaced by red light (wavelength= 750nm). Which of the following changes will allow the spacing of the bright bands on the screen to remain unaffected by the change of light color? a. Increase the brightness of the light source. b. Increase D. c. Decrease d. d. Increase d and/or decrease D.
I am having trouble understanding the following multiple choice questions about slit apparatuses and their relations to light, any help would be greatly appreciated :)
1. Using the attached image titled "1" A double-slit apparatus is set up as shown. Green light (wavelength= 500nm) is used to form the interference pattern. The green light is then replaced by red light (wavelength= 750nm). Which of the following changes will allow the spacing of the bright bands on the screen to remain unaffected by the change of light color?
2. For fun, a student constructs a three-slit interference experiment. If the light from each of the three slits arrives in phase at the central maximum, then how will the intensity I compare to the intensity I1 from a single slit?
a. 3I1
b. 9I1
c. I1
d. 6I1
3. An
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