Monochromatic light passes through two parallel narrow slits and forms an interference pattern on a screen. As the distance between the two slits is decreased, the distance between light bands in the pattern on the screen will decrease. increase. remain the same.

Question

Monochromatic light passes through two parallel narrow slits and forms an interference pattern on a screen. As the distance between the two slits is decreased, the distance between light bands in the pattern on the screen will   decrease.   increase.   remain the same.

anonymous · Answer

From the condition for constructive interference it is evident, that x is inversely proportional to a, so when distance between slits is decreased, the distance between light bands in the pattern increases. http://www.physicsclassroom.com/Class/light/u12l3c.cfm

anonymous · Answer

Thank you