What do you understand about the power of a lens? Write its SI unit. A student uses a lens of focal length 50 cm and another of – 20cm. Write the nature of and power of each lens.
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What do you understand about the power of a lens? Write its SI unit. A student uses a lens of focal length 50 cm and another of – 20cm. Write the nature of and power of each lens.
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Answer:
the reciprocal of focal length is known as power of a lens.Its SI unit is dioptre.
Answer:
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