Question

Sebuah cermin cekung memiliki jarak benda 50 cm dan jarak bayangannya 65 cm. Maka, tentukanlah berapa jarak fokusnya!​

Answer 1

Penjelasan dengan langkah-langkah:

1/f = 1/s + 1/s'

1/f = 1/50 + 1/65

1/f = 13/650 + 10/650

1/f = 23/650

f = 650/23

f = 28,26 cm

Answer 2

1/f = 1/s + 1/s'

1/f = 1/50 + 1/65

1/f = 13/650 + 10/650

1/f = 23/650

23f = 650

f = 650/23

f = 28,26 cm

:)