The sun (diameter ) subtends an angle radian at the pole of a concave mirror of focal length . The diameter of the image of sun formed by mirror is |
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a) |
b) |
c) |
d) |

The sun (diameter ) subtends an angle radian at the pole of a concave mirror of focal length . The diameter of the image of sun formed by mirror is |
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a) |
b) |
c) |
d) |

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