Question

Define one dioptire of power of lens?

Answer 1

1diapotre: It is the power of lens whose focal length is 1m

p = 1/f..


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Answer 2

Before defining one dioptre lemme add few more important points :

• The deviation of the incident rays produced by a lens on refraction through it is called is called measure of its power.
• Its unit is dioptre symbolised by D.
• Power (in D ) = 1 / focal length(in m)

One dioptre is said to be the power of a lens which has a focal length of 1 m or 100 cm.

Thats the definition........ merry christmas and and happy new year in advance.......

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