Question Detail

PHY 104 Refraction Through Lenses and Optical Instruments Objective Question
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Question

According to the thin lens equation sign conventions, under what condition is the focal length (f) considered negative?
Options
A For converging lenses.
B For diverging lenses.
Correct Answer
C When the image formed is real.
D When the object is placed at infinity.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 13, point 1, clearly states: 'The focal length is positive for converging lenses and negative for diverging.'

Hint

Review the first rule of sign conventions for focal length on page 13.

Question Info

Course: PHY 104
Topic: Refraction Through Lenses and Optical Instruments
Type: Objective
Difficulty: Not specified
Question 78 of 947
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