If two +5 D, lenses are mounted at some distance apart, the equivalent power will always be negative, if the distance is |
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a) |
Greater than 40 cm |
b) |
Equal to 10 cm |
c) |
Equal to 10 cm |
d) |
Less than 10 cm |

If two +5 D, lenses are mounted at some distance apart, the equivalent power will always be negative, if the distance is |
|||||||

a) |
Greater than 40 cm |
b) |
Equal to 10 cm |
c) |
Equal to 10 cm |
d) |
Less than 10 cm |

1 Answer - 5876 Votes

3537

When two lenses are separated by some distance , then equivalent power Power will be negative, if 10-25x will be negative |