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प्रश्न
What are conjugate foci?
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उत्तर
Two points lying on the principal axis such that the image of an object kept at such point is formed on the other point, are called conjugate foci.
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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Name the lens used as a magnifying glass.
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Name the lens for which magnification can be 1. For what position of the object will the magnification be 1?
Name the lens for which magnification is always less than 1.
What is a simple microscope or a magnifying glass? Draw a ray diagram to show its function.
