Class – XII (Year 2009)
Subject – Physics - (Foreign)

General Instructions:
(i) All questions are compulsory.
(ii) Marks for each question are indicated against it.
(iii) Use of Calculators is not permitted.

1. Draw the wavefront coming out of a convex lens when a point source of light is placed at its focus.
2. Why are coherent sources required to create interference of light?
3. Why do we not encounter diffraction effects of light in everyday observations?

(E-Book) CBSE Board Class 12th Papers PDF : Physics

Courtesy: cbse.nic.in