Reason for f and R.
Asked by
| 23rd Jan, 2009,
03:40: PM
Expert Answer:
In case of a lens the focal length is given by the lens makers formula. The focal length depends on the material of the lens in addition to its R.
f is equal to R/2 only if the refractive index of the material is 1.5 and it is placed in air with n =1. Besides the radius of curvature of the two surfaces must be equal for this to happen.
Answered by
| 27th Jan, 2009,
04:12: PM
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Sign Up
Verify mobile number
Enter the OTP sent to your number
Change