3 years ago

The ratio of present ages of sunanya

Physics

1 answer:

kykrilka [37]3 years ago

4 0

hope it helps

plz mark brainliest

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3 years ago

A converging lens of focal length 20 cm is placed in contact with a diverging lens of focal length 30 cm. The focal length of th

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Answer:

The focal lenth (F) =+10.0cm

Explanation:

The formular for combined focal length (F) is given as;

$1/f = 1/f_{1} + 1/f_{2}$

In this question,

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Plugging the values into the formuar above,

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