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