Question

In Young's double slit experiment, if we increase the separation between the plane of slits and the screen by keeping everything constant, then

• A. Intensity of central maxima will increase but fringe width will decrease
• B. Intensity of central maxima will decrease but fringe width will increase.
• C. Both intensity of central maxima and fringe width will increase
• D. Both intensity of central maxima and fringe width will decrease.

Answer 1

Answer: (B)

Use the basic concept of interference of light waves.