Question

A mica slit of thickness t and refractive index \( \mu \) is introduced in the ray from the first source \( S_1 \). By how much distance of fringes pattern will be displaced?

• A. \( \frac{D}{\mu - 1} t \)
• B. \( \frac{D}{\mu} t \)
• C. \( \frac{D}{\mu - 1} \)
• D. \( \frac{D}{\mu} \)

Hint:

Introducing a mica slit causes a displacement of the fringe pattern proportional to its thickness and inversely proportional to the refractive index.

Answer 1

The Correct Option is B