Question Detail

PHY 104 Refraction Through Lenses and Optical Instruments Objective Question
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Question

For two thin lenses that are held in contact, how is the power of the combined lens (P_co) calculated?
Options
A P_co = P1 - P2
B P_co = P1 * P2
C P_co = P1 + P2
Correct Answer
D P_co = 1 / (1/P1 + 1/P2)
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 20 demonstrates this: 'Add together the powers of each of the two lenses to get the power of the combined lens.' The example shows P_co = PA + PB.

Hint

Check the rule for combining the powers of lenses in contact on page 20.

Question Info

Course: PHY 104
Topic: Refraction Through Lenses and Optical Instruments
Type: Objective
Difficulty: Not specified
Question 81 of 947
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