Question Detail

PHY 104 Refraction Through Lenses and Optical Instruments Objective Question
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Question

Why is vision blurry under water, and how can it be avoided?
Options
A Light rays are bent too much; avoided by using dark filters
B Light rays are bent much less; avoided by wearing goggles
Correct Answer
C Water absorbs too much light; avoided by using powerful lights
D The eye's focal length changes; avoided by blinking
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 48 states: 'Vision is blurry under water because light rays are bent much less than they would be if entering the eye from air. This can be avoided by wearing goggles.'

Hint

The refractive index difference between the eye and water is smaller than between the eye and air, reducing the bending of light.

Question Info

Course: PHY 104
Topic: Refraction Through Lenses and Optical Instruments
Type: Objective
Difficulty: Not specified
Question 100 of 947
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