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1 dioptre =​
  • a)
    1m-9
  • b)
    1m-2
  • c)
    1m-6
  • d)
    1m-1
Correct answer is option 'D'. Can you explain this answer?
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1 dioptre =a)1m-9b)1m-2c)1m-6d)1m-1Correct answer is option 'D'. Can y...
A dioptre (British spelling) or dioptre (American spelling) is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres. (1 dioptre = 1 m−1.) It is thus a unit of reciprocal length.
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1 dioptre =a)1m-9b)1m-2c)1m-6d)1m-1Correct answer is option 'D'. Can y...
Power=1/focal length

unit of power is dioptre or m^-1
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