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An observer with normal eyes views an object with magnifying glass of focal length 5 ...

An observer with normal eyes views an object with magnifying glass of focal length 5 cm. the angular magnification is?
[least distance of distinct vision D = 25 cm]
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  • A -6
  • B -5
  • C 5
  • D 6
Correct Answer: Option A
Explanation:
Angular magnification, M = ((D)/F + 1) where D is least distance of distinct vision
∴ M = ((25)/5 + 1) = -6

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