Question
Question: A point object is placed on the principal axis of a diverging lens and its image (I<sub>1</sub>) is ...
A point object is placed on the principal axis of a diverging lens and its image (I1) is formed on the principal axis. If the lens is rotated by angle q about its optical centre such that its principal axis also rotates by the same amount then the Image (I2) of the same object is formed at point P. Choose the correct option –
A
Point P lies on the new principal axis
B
Point P lies on the old principal axis
C
Point P is anywhere between the principal axis
D
I1 and I2 coincides if q = 45ŗ
Answer
Point P lies on the old principal axis
Explanation
Solution
After rotation of lens all rays will get change but ray (1) will remain same
\ Image will form again on old principal axis