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प्रश्न
What is the power of a convex lens of focal length 0.5 m?
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उत्तर
Power of a lens is given by:
Power `(p)=1/f`
∴`p=1/0.5=2D`
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संबंधित प्रश्न
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(b) What is the magnification in this case?
(c) Is the magnification equal to the magnifying power in this case? Explain.
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(a) What is the power of this combination?
(b) What is the focal length of this combination?
(c) Is this combination converging or diverging?
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What is the unit of power of a lens? Define the unit of power of a lens.
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(2) an erect image of the tree on the lens.
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1 D is equivalent to:
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