Question

A glass of thickness 1 micron is placed in the path of one of the interfering beams in a YDSE experiment. If the wavelength of the source is $6000\dot{A}$ and the central band is found to shift by one band width, find the refractive index of glass.

• A. 1.1
• B. 1.3
• C. 1.4
• D. 1.6

Answer 1

The correct option is D 1.6

$\frac{t(\mu -1)D}{d}=\beta$ , substituting values, we get, $\mu =1.6$