The refractive index of the material of a double convex lens is 1.5 and its focal length is 5 cm. If the radii of curvature are equal, the value of the radius of curvature is ………. cm. |
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(a) |
6.5 |
(b) |
5 |
(c) |
8 |
(d) |
5.6 |

The refractive index of the material of a double convex lens is 1.5 and its focal length is 5 cm. If the radii of curvature are equal, the value of the radius of curvature is ………. cm. |
|||||||

(a) |
6.5 |
(b) |
5 |
(c) |
8 |
(d) |
5.6 |

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