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Author Question: A convex mirror with focal length of -20 cm forms an image 15 cm behind the surface. Where is the ... (Read 60 times)

Jkov05

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on: Jul 28, 2018
A convex mirror with focal length of -20 cm forms an image 15 cm behind the surface. Where is the object located as measured from the surface?
 a. 30 cm
  c. 15 cm
  b. 7.5 cm
  d. 60 cm

Question 2

Which type of heating causes sunburn?
 a. conduction
  c. radiation
  b. convection
  d. all of the above


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Edwyer

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

D

Answer to Question 2

C


Jkov05

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Reply 2 on: Jul 28, 2018
Thanks for the timely response, appreciate it

ecabral0

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Reply 3 on: Yesterday
Wow, this really help

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