Question

answer answer answer answer my question ​

Answer 1

ⓗⓔⓨⓐ ✌✌

since Central maximum of both the interference pattern coincide therefore ,

m1 D lemda 1 / d = m2 D lemda 2 / d

m1 lemda 1 = m2 lemda 2

or, lemda 2 = m1 lemda 1 / m2

= 3× 590 / 4 nm

= 442.5 nm

Answer 2

Explanation:

Check the attachment :)