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If two thin lenses of power p1 and p2 are held in contact then the power of the combination will be​
  • a)
    p1 +p2
  • b)
    p12 +p22
  • c)
    p1 -p2
  • d)
    (p1 +p2)1/2
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
If two thin lenses of power p1and p2are held in contact then the power...
Explanation:
When two thin lenses of power p1 and p2 are held in contact, the power of the combination can be calculated using the lens formula:

1/f = 1/f1 + 1/f2

where f is the focal length of the combination lens, f1 is the focal length of the first lens, and f2 is the focal length of the second lens.

Using the relation p = 1/f, we get:

p = p1 + p2

This means that the power of the combination lens is equal to the sum of the powers of the individual lenses.

Therefore, the correct option is 'A' i.e. p1p2.

Summary:
When two thin lenses are held in contact, the power of the combination is equal to the sum of the powers of the individual lenses.
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Community Answer
If two thin lenses of power p1and p2are held in contact then the power...
When 1/F = 1/f1 + 1/f2....
therefore,..
P = p1 + p2
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