Que12- which of the following statement is true?
A Aconvex lens has 4 dioptre power having a focal length 0.25 m
B. A convex lens has 4 dioptre power having a focal length 0.25 m
C. A concave fens has 4dioptre power having a focal length 0.25m
D.A concave lens has -4 dioptre power having a focal length 0.25m
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Answer:
b option is correct
Step-by-step explanation:
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My answer is correct because same question came in my test and i gave correct answer
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