An object is placed 10cm away from the lens of a camera. The image formed is the same size as the object. What is the focal length of the lens? - Quora
At what distance from a concave mirror of focal length 10cm should an object 2cm be long placed in order to get an erect image of 6 cm tall ?
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A concave mirror of focal length 10cm is placed in front of a convex mirror of focal length 20 c... - YouTube
A converging lens A of focal length 10 cm is separated by 4 cm from a diverging lens B of focal length 15 em. A parallel beam of light falls on A,
a convex lens of focal length 10cm forms a virtual image of an object at 30cm from the lens . the magnification produced will b
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