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3 years ago

A television camera lens has a 17-cm focal length and a lens diameter of 6.0 cm. what is its number?

Physics

1 answer:

IRINA_888 [86]3 years ago

3 0

Answer:

= 2.83

Explanation:

F number (N) is given by the formula;

F- number = f/D

where f = focal length of lens and D = diameter of the aperture

Therefore;

F number = 17 cm/6 cm

<u> = 2.83</u>

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