Question

Benda berjarak 8 cm didepan cermin cekung menghasilkan perbesaran bayangan 1,5. Agar terjadi perbesaran 2 kali, maka benda harus digeser sejauh ?

Answer 1

s = 8cm

M1 = 1,5

M2= 2

S2 =...?

M1 = |s'/s1|

1,5 =|s'/8|

s' = 12

M2 = |s'/s2|

2 = |12/s2|

2 s2 = 12

s2 = 12/2 = 6