why is a convex lens of a small focal length preferred for a magnifying glass
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A convex lens is also used as a simple microscope. The object is kept between the focal length and mirror so that a virtual, erect and magnified image is formed. Smaller focal length has more power and is suitable for larger magnification. This is why convex lens is used.
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1. magnified image
2. virtual & erect image
3. more power
4. suitable for larger magnification
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