If the radius is curvature of is 21cm what is the focal length
Share
If the radius is curvature of is 21cm what is the focal length
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
10.5cm
Explanation:
f =r/2 so 21/2=10.5cm