Question Detail

PHY 104 Refraction Through Lenses and Optical Instruments Objective Question

Question

According to the Lensmaker's Equation sign conventions mentioned in the document, when are the radii of curvature R₁ and R₂ considered positive?
Options
A When the surfaces are concave
B When the surfaces are convex
Correct Answer
C Always, by convention
D Only for diverging lenses
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 25 states: 'In the equation above, both sur faces are convex and R₁ and R₂ are considered positive.'

Hint

Review the text on page 25 regarding Lensmaker's Equation sign conventions.

Question Info