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प्रश्न
A concave mirror produces magnification of +4. The object is placed:
(a) at the focus
(b) between focus and centre of curvature
(c) between focus and pole
(d) between the centre of curvature
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उत्तर
between focus and pole
A concave mirror produces a magnification of +4 when the object is placed between the focus and the pole.
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