Coherent light that contains two wavelengths, 660 nm (red) and 470 nm (blue), passes through two narrow slits that are separated by 0.300 mm. their interference pattern is observed on a screen 4.00 m from the slits. what is the distance on the screen between the first-order bright fringes for the two wavelengths?

0.00254 m or 2.54 mm

Explanation:

y = Fringe distance

d= Distance between slits = 0.3 mm

L = Screen distance = 4 m

= Wavelength

In the case of constructive interference

For first order wavelength

The distance between the fringes is given by

The distance on the screen between the first-order bright fringes for the two wavelengths is 0.00254 m or 2.54 mm

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.

the right answer is 0.3 meters per second