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ho=5cm
so=20cm
f=5cm
dit:
a.si
b.M
c.sifat bayangan
d.hi
jawab:
lensa cekung -> f(-)
a. Si = So.f/So-f
Si= 20.(-5)/20-(-5)
Si=-100/25= - 4cm (- artinya bayangan maya)
b. M= |si/so| =|-4/20| =4/20=1/5=0,2 (perbesaran yg <1 artinya diperkecil)
c.Sifat bayangan :
1.Maya
2.Tegak
3. diperkecil
d.M=hi/ho
0,2=hi/5
hi=0,2.5=1 cm
s = 20 cm
f = -5 cm (lensa divergen)
a) s'= 4 cm di depan lensa
b) Besaran bayangan = bayangan terletak diruang I
c) sifat bayangan= maya, terbalik, diperkecil
d) h'= 1 cm (terbalik)
e) P =...