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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 164 times)

ap345

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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

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Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

A


ap345

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Reply 2 on: Jul 28, 2018
Wow, this really help

carlsona147

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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