A beam of yellow light is made to pass through two slits that are 3.0 x 10−3 meters apart. On a screen 2.0 meters away from the slits, an interference pattern appears with bands of light separated by 3.9 x 10−4 meters. What is the wavelength of the light?

3.6 x 10−8 m
5.9 x 10−7 m
6.5 x 10−7 m
3.9 x 10−6 m

The wavelength of the light is .

Explanation:

The band separation for a light wave of wavelength is given by

where is the slit separation, and is the distance to the screen.

Solving the above equation of wavelength we get:

Now, in our case

,

and ;

therefore,

which is the 2nd choice from the options given.

are there options? cause you ain’t. real specific

neither accurate nor precise.