Ask
Login
0
1.1kviews
A white light is used to study single-slit diffraction pattern. For what $\lambda$ of light does the $2^{nd}$ minimum coincide with the $3^{rd}$ minimum for 4000 $\mathring{A}$ line?
written 6.7 years ago by gravatar for neeta.vanage neeta.vanage • 860 modified 2.7 years ago by gravatar for pedsangini276 pedsangini276 • 4.8k

Subject: Applied Physics 2

Topic: Interference And Diffraction

Difficulty: Medium
engineering physics
ADD COMMENT EDIT
1 Answer
0
3views
written 6.6 years ago by gravatar for neeta.vanage neeta.vanage • 860 modified 6.6 years ago by gravatar for mananbothra mananbothra • 100

Condition for minima in single slit: a sinθ = nλ

For second minimum: a sinθ = 2 λ$_1$

For third minimum: a sinθ = 3 λ$_2$

λ$_2$ = 4000 AU

2 λ$_1$ = 3 λ$_2$

λ$_1$ = 6000AU
ADD COMMENT EDIT
Please log in to add an answer.