Question Detail

PHY 104 Refraction Through Lenses and Optical Instruments Objective Question
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Question

A person suffering from farsightedness (hypermetropia) has a near point further away than the normal 25 cm. What type of lens is needed to correct this vision defect?
Options
A A diverging lens
B A converging lens
Correct Answer
C A plano-concave lens
D A Fresnel lens
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 43 states: 'A converging lens is needed to correct this as it helps to converge the light more.' The diagram on page 45 also illustrates this correction.

Hint

Farsighted eyes do not converge light enough; the corrective lens needs to add converging power.

Question Info

Course: PHY 104
Topic: Refraction Through Lenses and Optical Instruments
Type: Objective
Difficulty: Not specified
Question 99 of 947
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