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For a normal eye, the cornea of eye provides aconverging power of 40D and the leastconverging power of the eye lens behind thecornea is 20D. Using this information, thedistance between the retina and the eye lens ofthe eye can be estimated to be [NEET 2013]
  • a)
    2.5 cm
  • b)
    1.67 cm
  • c)
    1.5 cm
  • d)
    5 cm
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
For a normal eye, the cornea of eye provides aconverging power of 40D ...
Here, P1 = 40D
P2 = 20D
f eq =?

P eq = P1+ P2
= 40+20
=60D

f eq = 100/ P eq =. 100/60 = 1.67 cm.
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Community Answer
For a normal eye, the cornea of eye provides aconverging power of 40D ...
Power of Cornea, P1​=40D
and power of the eye lens, P2​=20D
Peff​=P1​+P2
⇒Peff​=40D+20D=60D
So, f= ​100/ Peff ​=100​/60=1.67cm
 
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For a normal eye, the cornea of eye provides aconverging power of 40D and the leastconverging power of the eye lens behind thecornea is 20D. Using this information, thedistance between the retina and the eye lens ofthe eye can be estimated to be [NEET 2013]a)2.5 cmb)1.67 cmc)1.5 cmd)5 cmCorrect answer is option 'A'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about For a normal eye, the cornea of eye provides aconverging power of 40D and the leastconverging power of the eye lens behind thecornea is 20D. Using this information, thedistance between the retina and the eye lens ofthe eye can be estimated to be [NEET 2013]a)2.5 cmb)1.67 cmc)1.5 cmd)5 cmCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For a normal eye, the cornea of eye provides aconverging power of 40D and the leastconverging power of the eye lens behind thecornea is 20D. Using this information, thedistance between the retina and the eye lens ofthe eye can be estimated to be [NEET 2013]a)2.5 cmb)1.67 cmc)1.5 cmd)5 cmCorrect answer is option 'A'. Can you explain this answer?.
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