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Two lenses of power +4 and -6 dioptres are placed in contact with each other. The focal length of the combination will be

(a)

0.5 meter

(b)

-0.1 meter

(c)

-0.5 meter

(d)

0.1 meter



Question ID - 101115 | SaraNextGen Top Answer

Two lenses of power +4 and -6 dioptres are placed in contact with each other. The focal length of the combination will be

(a)

0.5 meter

(b)

-0.1 meter

(c)

-0.5 meter

(d)

0.1 meter

1 Answer
127 votes
Answer Key / Explanation : (c) -

-0.5 meter

127 votes


127