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Pembahasan Soal<br />

Pada teropong bintang ....<br />

(1) bayangan oleh lensa objektif<br />

terletak di titik api II.<br />

(2) titik api II lensa objektif<br />

diimpitkan dengan titik api I<br />

lensa okuler<br />

(3) bayangan akhir terletak di tak<br />

terhingga<br />

(4) bayangan akhir terbalik<br />

Gambar 6.51<br />

Pembentukan bayangan pada<br />

teleskop Bumi oleh mata yang<br />

berakomodasi maksimum.<br />

objektif<br />

UMPTN, 1993<br />

Jawaban : D<br />

okuler<br />

okuler<br />

Sumber: Jendela Iptek, 1997<br />

Gambar 6.52<br />

Teleskop prisma<br />

140 Mudah dan Aktif Belajar Fisika untuk Kelas X<br />

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<br />

<br />

<br />

<br />

f ob<br />

objektif<br />

(+)<br />

pembentuk<br />

(+)<br />

<br />

<br />

<br />

<br />

<br />

f ob<br />

F ob<br />

F p<br />

4f p<br />

<br />

okuler<br />

(+)<br />

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F p<br />

F ok<br />

f ok<br />

F ok<br />

mata<br />

pengamat

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