Level:
Project ID:
9000039304
Accepted:
1
Clonable:
0
Easy:
1
Find the focus length \(f\)
as a function of the other variables from the following equation relating this distance with object
and image distances \(a\)
and \(a'\).
\[
\frac{1}
{f} = \frac{1}
{a} + \frac{1}
{a'}
\]
\(f = \frac{aa'}
{a+a'}\)
\(f = \frac{a-a'}
{a+a'}\)
\(f = a + a'\)
\(f = \frac{a}
{a'}\)