Physics

Physics · optics

Problem

Example 23: A square piece of cellophane film with index of refraction 1.5 has a wedge shaped section so that its thickness at two opposite sides is

t_{1}

and

t_{2}

. If the number of fringes appearing with wavelength

\lambda=6000 \AA

is 10 , calculate the difference

\left(t_{1}-t_{2}\right)

. [UPTU, B.Tech. II Sem. 2008]