[Answered] A camera has a converging lens with a focal length of 56 mm. If the f-number is 2.8, what is the ...

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Author Question: A camera has a converging lens with a focal length of 56 mm. If the f-number is 2.8, what is the ... (Read 80 times)

ap345

Hero Member
Posts: 537

on: Jul 28, 2018

A camera has a converging lens with a focal length of 56 mm. If the f-number is 2.8, what is the diameter of the lens (in mm)?
a. 10
b. 31
c. 0.50
d. 20
e. 50

Question 2

An object is placed 15 cm in front of a diverging lens whose focal length is 12 cm. Where will the image be located (in cm)?
a. -6.7
b. -7.2
c. -0.15
d. -60
e. -5.0

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olderstudent

Sr. Member
Posts: 339

Reply #1 on: Jul 28, 2018

Answer to Question 1

D

Answer to Question 2

A

ap345

Member
Posts: 537

Reply 2 on: Jul 28, 2018

Gracias!

aliotak

Member
Posts: 326

Reply 3 on: Yesterday

Great answer, keep it coming

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