A simple microscope consists of a concave lens of power D and a convex lens of power +20D in contact. If the image is formed at infinity, then the magnifying power cm is |
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a) |
2.5 |
b) |
3.5 |
c) |
2.0 |
d) |
3.0 |

A simple microscope consists of a concave lens of power D and a convex lens of power +20D in contact. If the image is formed at infinity, then the magnifying power cm is |
|||||||

a) |
2.5 |
b) |
3.5 |
c) |
2.0 |
d) |
3.0 |

1 Answer

127 votes

Power of combination m =10 cm For image at infinity |

127 votes

127