Question Detail

PHY 104 Refraction Through Lenses and Optical Instruments Objective Question

Question

What is spherical aberration in lenses?
Options
A Light of different wavelengths focuses at different points
B Rays far from the lens axis do not focus at the focal point
Correct Answer
C Variation in magnification with distance from the lens
D The image appears distorted due to lens thickness
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 59 states: 'Spherical aberration: rays far from the lens axis do not focus at the focal point.'

Hint

It relates to the shape of the lens and how rays passing through different parts of the lens converge.

Question Info