Focal length of combination of two lenses is +100 cm . If the focal length of one of them is +20 cm , that of other will be?Required to answer. Single choice.
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Answered by
0
Answer:
100 + 20
Explanation:
=100+20
=120cm
Answered by
0
Answer:
120
Explanation:
focal length of combination of two lenses is = +100
the focal length of one them is = +20
= 100+20
= 120
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