Question

In an young expirment the distance between two slits and that between slits and the screen are 0.05cm and 1m respectvily . Find the distance between 3rd bright and 5th dark fringes . take the wavelenth of light equal to 5000 A°​

Answer 1

Answer:

0.5

Explanation:

for bright fring

y1 = n×path diff×1/0.0005

= 3mm

for dark

y2 = (2n - 1)path dif × 1/2 ×0.0005

= 2.5

the difference between Y1 and Y2

is 0.5