Object placed ………. of lens or mirror give infinite magnification. |
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(a) |
at focus |
(b) |
at infinite distance |
(c) |
between F1 and2F1 |
(d) |
at 2F1 |
Object placed ………. of lens or mirror give infinite magnification. |
|||||||
(a) |
at focus |
(b) |
at infinite distance |
(c) |
between F1 and2F1 |
(d) |
at 2F1 |