Question Detail

PHY 104 Refraction Through Lenses and Optical Instruments Objective Question
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Question

According to the sign conventions for the Lensmaker's Equation, when is the radius of curvature (R) for a lens surface considered negative?
Options
A When the surface is convex.
B When the surface is concave.
Correct Answer
C When the lens is used as a converging lens.
D When the light impinges on the other surface first.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 25 specifies: 'In the equation above, both sur faces are convex and R₁ and R₂ are considered positive. It also works for lenses with one or both surfaces concave; but for concave surface, the radius must be considered negative.'

Hint

Review the specific sign convention for the radius of curvature of concave surfaces on page 25.

Question Info

Course: PHY 104
Topic: Refraction Through Lenses and Optical Instruments
Type: Objective
Difficulty: Not specified
Question 83 of 947
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