Single Answer MCQ
Q-00106616
What is the power of a convex lens with a focal length of +0.25 m?
1
+4 D
2
-4 D
3
0 D
4
None of the above
Answer and Solution
Answer
A. +4 D
Solution:
Power (P) is defined as P = 1/f, where f is in meters. Thus, P = 1/0.25 = +4 D, indicating a convex lens.
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