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प्रश्न
Define its magnifying power and write the expression for it?
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उत्तर
Magnifying Power: The magnifying power m is the ratio of the angle α subtended at the eye by the final image to the angle β which the object subtends at the lens or the eye.
`m≈ β/α h/f_e . f_o/h = f_o/f_e`
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संबंधित प्रश्न
A small telescope has an objective lens of focal length 140 cm and an eyepiece of focal length 5.0 cm. What is the magnifying power of the telescope for viewing distant objects when
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