Apair of slits separated by 1 mm, are illuminated with monochromatic light of wavelength 411 nm. the light falls on a screen 1.21 m away producing an interference pattern. a piece of glass with index of refraction n = 1.79 is placed at one slit. placing the piece of glass in front of the slit causes the maxima to shift 0.37δx, where δx is the distance between adjacent maxima. what is the thickness of the glass in μm?

Explanation:

Path difference due to a transparent slab is given as

here we know that

now total shift in the bright fringe is given as

Also we know that the fringe width of maximum intensity is given as

now we have

now the shift is given as

given that the shift is

here we have

now plug in all values in it

when it gains or loses electrons

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