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Two lenses of power +4 and -6 dioptres are placed in contact with each other. The focal length of the combination will be |
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|
(a) |
0.5 meter |
(b) |
-0.1 meter |
(c) |
-0.5 meter |
(d) |
0.1 meter |
|
Two lenses of power +4 and -6 dioptres are placed in contact with each other. The focal length of the combination will be |
|||||||
|
(a) |
0.5 meter |
(b) |
-0.1 meter |
(c) |
-0.5 meter |
(d) |
0.1 meter |