Jawabanmu

2014-06-11T06:52:02+07:00
Dik:h=4cm
s=10cm
f=20cm
dit: a. s'=...?
b. m=...?
c.h'=...?
jwb: a. 1/f=1/s+1/s'
1/s'= 1/20-1/10
1/s'=1/20-2/20
1/s'=-1/20
s'= -20cm
b. m=s'/s=-20cm/10cm=-2cm
c. m=h'/h=-2cm=h'/20cm
h'=-2cmx20cm
h'= -40 cm
senang bisa membantu