In a concave mirror an object is placed at a distance x 1 from the focus and the image is…
Physics · JEE Main · NTA Exams — Optics
In a concave mirror an object is placed at a distance x1 from the focus and the image is formed at a distance x2 from the focus. Then the focal length of the mirror is
- x1x2
- \(\sqrt{\mathrm{x}_{1} \mathrm{x}_{2}}\)
- (x1 + x2)/2
- \(\sqrt{\mathrm{x}_{1} / \mathrm{x}_{2}}\)
Answer
(B) x _ 1 x _ 2
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