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Author Question: The angle between two plane mirrors that meet at one edge is 45. The change in direction of a ray ... (Read 74 times)

BrownTown3

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on: Jul 28, 2018
The angle between two plane mirrors that meet at one edge is 45. The change in direction of a ray that strikes the first mirror at a 60 angle of incidence when that ray reflects from the second mirror is
 a. 0.
  b. 45
  c. 90
  d. 150
  e. 270

Question 2

Eighty-eight prominent groups of stars in the sky are called the _______________.
 a. constellations
  b. local groups
  c. clusters
  d. galaxies


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juiceman1987

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

d

Answer to Question 2

a


BrownTown3

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

frankwu0507

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Reply 3 on: Yesterday
:D TYSM

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