distinguish between convex lens and concave lens
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Focal length of convex mirror is positive while focal length of concave mirror is negative.
Convex mirror forms virtual image while concave mirror forms both virtual and real.
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Answer:
Convex lens
- The reflected rays converges
- Generally real and inverted image is formed, except when object is between P and F
- Image size vary from point sized to highly enlarged
- It is used for correcting hypermetropic eye to see nearer objects
Concave lens
- The reflected rays diverges
- Virtual and erect image is formed
- Always form diminished image
- It is used for correcting myopic eye to see distant objects
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