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Asked: 2021-05-10T14:26:12+00:00 In:

As per the cartesian sign convention followed for mirrors and lenses

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75%(a) focal length of concave mirror and convex lens is negative ( 3 voters )
25%(b) focal length of concave mirror and convex lens is negative ( 1 voter )
0%(c) focal length of convex mirror and convex lens is negative
0%(d)focal length of convex mirror and concave lens is negative
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    1. (a)focal length of concave mirror and concave lens is negative

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