A convex lens of focal length 30 cm and concave lens of focal length 0.6 M are placed in contact What is power off combination
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A convex lens and concave lens of focal length 50 cm and 40 cm respectively are combined together what is the power of the combination ... P2 = 1/(-50/ 100)m = -2
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when we combine both lenswe gets 1.67D
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