Aviewing screen is separated from a double slit by 1.2 m. the distance between the two slits is 0.030 mm. monochromatic light is directed toward the double slit and forms an interference pattern on the screen. the second-order bright fringe (m = 2) is 4.5 cm from the center line on the screen. determine the wavelength of the light. calculate the distance between adjacent bright fringes.

562.5 nm

Explanation:

Given

Screen is separated from double slit

Distance between two slits

Second order bight fringe is 4.5 cm from center  line

i.e.

Distance between adjacent bright fringe

i'm thinking more like energy

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be