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Author Question: A concave mirror forms a real image at 25.0 cm from the mirror surface along the principal axis. If ... (Read 76 times)

krzymel

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  • Posts: 548
on: Jul 28, 2018
A concave mirror forms a real image at 25.0 cm from the mirror surface along the principal axis. If the corresponding object is at a 20.0-cm distance, what is the mirror's focal length?
 a. 1.43 cm
  c. 7.14 cm
  b. 16.7 cm
  d. 11.1 cm

Question 2

Which one of the following processes of heat transfer requires the presence of a fluid?
 a. conduction
  c. convection
  b. radiation
  d. None of the choices are valid.


Ahernandez18

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  • Posts: 361
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

C


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