Question

In a double-slit interference experiment, which of the following actions (perhaps more than one) would cause the fringe spacing to increase? (a) Increasing the wavelength of the light. (b) Increasing the slit spacing. (c) Increasing the distance to the viewing screen. (d) Submerging the entire experiment in water.

Short answer

Increasing the wavelength of the light.

Increasing the distance to the viewing screen.

Step-by-step solution

Definition of double slit Experiment

Interference from Two Slits Assume the slits are separated by and the viewing screen is located $d=1.00cm$ $L=1.20m$ from the slits in the double-slit interference experiment.

Step2:  Action of double slit experiment

As a result, increasing and L increases the perimeter spacing while holding the opposite parameters constant. Similarly, increasing d decreases the perimeter spacing while keeping all other parameters constant. Submerging the experiment in water causes the perimeter spacing to decrease while the opposite parameters remain unchanged, leading to a decrease in fringe spacing. As a result, the solution Increasing the wavelength of the sunshine. Increasing the gap between yourself and also the viewing screen