अवतल लेंस के लिए सूत्र `(1)/(v) -(1)/(u) =(1)/(f)` की स्थापना कीजिए |

What is f in mirror formula (1)/(u)+(1)/(v)=(1)/(f) ?

If f(x)=(u)/(v) then f'(x)=(1)/(v^(3))

The focal length of a mirror is given by (1)/(v)-(1)/(u)=(2)/(f) . If equal errors alpha are made in measuring u and v then relative error in f is

The focal length of a mirror is given by (1)/(v)-(1)/(u)=(2)/(f). If equal errors alpha are made inmeasuring u and v. Then relative error in f is