Question

Instructions :
1. Answer All questions from the given three Sections I, II and III of
Part-A.
In Section III every question has internal choice, answer any one
alternative.
Section-I
(7x1=7 Marks)
Note: 1. Answer All the questions.
2. Each question carries ONE mark.
3. Write the answers in 1 to 2 sentences.
A rectangular acrylic plane mirror is bent in such way that it acts as a concave
mirror. Without changing its length and breadth, can we change its focal
length ? Guess and write.
19E(A)
P.T.O.
II

Answer 1

Answer:

No

Explanation:

We cannot change the focal length without changing the length and breadth because the focal length is dependent on the length of the mirror.