Question

yang bisa tolong bantu dong plisss​

Answer 1

Verified answer

Jawaban:

9.

f = 30 cm

s = 90 cm

h = 6 cm

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

1/-30 = 1/90 + 1/s'

1/-30 - 1/90 = 1/s'

-3/90 - 1/90 = 1/s'

-4/90 = s'

s' = -90/4 = -22,5 cm

M = s'/s = 22,5/90 = 1/4

M = h'/h

1/4 = h'/6

h' = 6/4 = 1,5 cm

b.

s = 60 cm

s' = ?

M = ?

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

1/-30 = 1/60 + 1/s'

1/-30 - 1/60 = 1/s'

-2/60 - 1/60 = 1/s'

-3/60 = s'

s' = -60/3 = -20 cm

M = s'/s = 20/60 = 1/3

10.

R = 3 m

f = 1,5 m

h = 3 m

s = 75 cm = 0,75 m

s' = ?

h' = ?

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

1/-1,5 = 1/0,75 + 1/s'

1/-1,5 - 1/0,75 = 1/s'

1/-1,5 - 2/1,5 = 1/s'

-3/1,5 = 1/s'

s' = -0,5 m

M = s'/s = 0,5/0,75 = 0,67

M = h'/h

0,67 = h'/3

h' = 2 m

*maaf bila tak benar

*biasakan cari jawaban lain utk dibandingkan

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