What is optical path?

What is optics?

A rays of light travel frons A to B , where the geometrical distance AB=8cm in air. It passes through two transparent media havin n_1=1.5 and n_2=1.75 as shown in the figure . What is the optical path between A and B ?

What is optical activity ? Explain.

What is optical rotation ?

What is optical activity ?

What is optical rotation? On what factors does it depend?

What is Optics?

Light travels from air into glass slab of thickness 50 cm and refractive index 1.5. (i) What is the speed of light in glass? (ii) What is the time taken by the light to travel through the glass slab? (iii) What is the optical path of the glass slab?