Question Detail

PHY 104 Refraction Through Lenses and Optical Instruments Objective Question
Take CBT

Question

According to the sign conventions for thin lenses, when is the image distance (dᵢ) considered positive?
Options
A When the image is on the same side as the light entering the lens.
B When the image is on the opposite side from the light entering the lens.
Correct Answer
C When the image is virtual.
D When the image is upright.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 13 states: 'The image distance is positive if the image is on the opposite side from the light entering the lens; otherwise it is negative.' This convention typically means real images formed by converging lenses will have a positive image distance.

Hint

Think about where real images are formed relative to the lens and the incoming light.

Question Info

Course: PHY 104
Topic: Refraction Through Lenses and Optical Instruments
Type: Objective
Difficulty: Not specified
Question 105 of 947
Previous Course Details Next