Question Detail

PHY 104 Refraction Through Lenses and Optical Instruments Objective Question
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Question

What happens to the image of an object if the top half of a lens is covered by a piece of cardboard?
Options
A The top half of the image disappears.
B The image becomes dimmer.
Correct Answer
C The image shifts its position.
D The image becomes inverted.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 10 presents this as a conceptual example. When part of the lens is covered, fewer light rays from the object reach the image plane, but all parts of the object can still contribute rays through the remaining portion of the lens. Therefore, the entire image is still formed, but it will be dimmer.

Hint

Consider how an image is formed by many rays from different points on the object passing through various parts of the lens. If some rays are blocked, what effect does that have on the *brightness* of the image?

Question Info

Course: PHY 104
Topic: Refraction Through Lenses and Optical Instruments
Type: Objective
Difficulty: Not specified
Question 64 of 947
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