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प्रश्न
What information about the nature of image is real or virtual, do you get from the sign of magnification + or -?
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उत्तर
A positive sign of magnification indicates that the image is virtual, while a negative sign indicates that the image is real.
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संबंधित प्रश्न
The speed of light in air is 3 × 108 m s-1. Calculate the speed of light in glass. The refractive index of glass is 1.5
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- the focal length of the lens, and
- the magnification.
Define the term magnifying power of a simple microscope. How does it depend on the focal length of the lens used?
Define magnification produced by a lens. State its unit.
Name the lens for which magnification is always less than 1.
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Copy and complete the following ray diagram.
Write an expression for the magnifying power of a simple microscope. How can it be increased?
