Two similar plano – convex lenses are combined together in three different ways as shown in the adjoining figure. The ratio of the focal lengths in three cases will be

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Two similar plano – convex lenses are combined together in three different ways as shown in the adjoining figure. The ratio of the focal lengths in three cases will be
17
Nov
Two similar plano – convex lenses are combined together in three different ways as shown in the adjoining figure. The ratio of the focal lengths in three cases will be Two similar plano - convex lenses are combined together in three different ways as shown in the adjoining figure. The ratio of the focal lengths [...]
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