Question

Yellow light (lembda= 6000 Å) illuminates a single slit of width 1x 10-4 m. Calculate the distance between two dark lines on either side to the central maximum, when
the diffraction pattern is viewed on a
screen kept 1.5 m away from the slit.​

Answer 1

Answer:

(i) Here, λ = 6000 Å = 6 x l0-4 m a = 1 x 10-4 m, D = 1.5m

Angular separation of two dark bands on each side of central bright band

2 theta = 2π/a *

and actual distance between them..,

2x = 2π/a * D

= 2*6*10^-7*1.5/1*10^-4

= 1.8*10^-4

(ii) for first minimum theta ..,

sin theta is nearly equal to theta...

theta = π/a

= 6*10^-7/1*10^-4

= 6*10^-3 rad

hope this helps u...

mark it brainliest...✌✌

Answer 2

Answer:

6×10^3 is the correct answer