Cermin
| Cermin | Fokus | Rumus | Tanda |
| Cermin Cekung
(sinar konvergen) |
Fokus = (+) | \(\dfrac{1}{s_o} + \dfrac{1}{s_i} = \dfrac{1}{f}\)
\(M = - \dfrac{s_i}{s_o} = \dfrac{h_i}{h_o}\)
\(P = \dfrac{100}{f}\) |
\(s_i = +\), bayangan nyata dan terbalik
\(s_i = -\), bayangan maya dan tegak
\(M = +\), bayangan tegak \(M = -\), bayangan terbalik |
| Cermin Cembung
(sinar divergen) |
Fokus = (−) |
SOAL LATIHAN