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Author Question: A plant that is 4.0 cm tall is placed 15 cm from a concave spherical mirror having a focal length of ... (Read 58 times)

gbarreiro

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on: Jul 29, 2018
A plant that is 4.0 cm tall is placed 15 cm from a concave spherical mirror having a focal length of magnitude 20 cm. Where is the image located?
 
  A) 60 cm in front of the mirror B) 60 cm behind the mirror
  C) 12 cm behind the mirror D) 12 cm in front of the mirror

Question 2

A flat coil is wrapped with 200 turns of very thin wire on a square frame with sides 18 cm long. A uniform magnetic field is applied perpendicular to the plane of the coil.
 
  If the field changes uniformly from 0.50 T to 0.00 T in 8.0 s, find the emf induced in the coil.
  A) 2.1 mV B) 0.41 V C) 4.1 mV D) 0.21 V


huda

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Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

B


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