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Class 10 Science Medium Mcq English Medium

When several lenses are placed in contact to form an optical instrument, the net power of the combination is given by

Question
When several lenses are placed in contact to form an optical instrument, the net power of the combination is given by
the average of the individual powers
the algebraic sum of the individual powers (P = P1 + P2 + P3 + ...)
the product of the individual powers
always equal to the power of the strongest lens only
Answer
the algebraic sum of the individual powers (P = P1 + P2 + P3 + ...)
Detailed Explanation
The chapter's 'More to Know' box states that the net power of lenses in contact is given by the algebraic sum of their individual powers.
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