An object is placed at 60cm , concave lens focal length is 20cm. find image and magnification.
If lightning candle is at 10cm from convex lens, image 50cm Calculate magnification.
Prove that , magnification m = image distance/ object distance.
Show with suitable ray diagram that magnification is one for convex lens when object is at 2 F.
Define magnification of lens. Also give the formula to calculate it.
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