Email
Chat with tutors
logo

Ask Questions, Get Answers

X
 
Answer
Comment
Share
Q)

The power of a lens is given as +2D, then its focal length is

$\begin{array}{1 1} (a)\; 200 cm \\ (b)\; 20 cm \\ (c)\; 50cm \\ (d)\; 25cm \end{array}$

1 Answer

Home Ask Tuition Questions
Your payment for is successful.
Continue
...