Question Detail

PHY 104 The Human Eye Objective Question
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Question

If one of the lenses from the previous question (a +0.5 diopter lens and a +2.0 diopter lens in contact) was a concave lens of -0.5 diopters, instead of +0.5 diopters, how would the total power be affected?
Options
A The total power would increase to +2.5 Diopters.
B The total power would remain +2.5 Diopters.
C The total power would decrease to +1.5 Diopters.
Correct Answer
D The total power would become -1.5 Diopters.
Correct Answer

Option C is the correct answer.

Detailed Explanation

If one lens is -0.5 diopters and the other is +2.0 diopters, their combined power is: Total Power = -0.5 D + +2.0 D = +1.5 Diopters. This is a decrease from the original +2.5 Diopters.

Hint

Concave lenses have negative power, so simply add the positive and negative values.

Question Info

Course: PHY 104
Topic: The Human Eye
Type: Objective
Difficulty: Not specified
Question 652 of 947
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