Question
Physics Question on Light - Reflection and Refraction
The power of a lens of focal length 20 cm is
A
5 D
B
0.2 D
C
1 D
D
2 D
Answer
5 D
Explanation
Solution
The correct option is (A): 5 D.
The power of a lens of focal length 20 cm is
5 D
0.2 D
1 D
2 D
5 D
The correct option is (A): 5 D.