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Define power of lens.and its units.deduce …

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Define power of lens.and its units.deduce the relation 1/f=1/f1 + 1/f2 for two thin lenses kept in contact coaxially.

    • Posted by Shivani Sonani 7 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Pranjali Mahajan 7 years, 10 months ago

    Power may be defined as reciprocal of the focal length si unit dioptre derivation nicely given in ncert

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