Characteristics Of Light (Section 1)

7 Questions | By Reiko309 | Last updated: Mar 21, 2022 | Total Attempts: 167

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I think that a particle must have a separate reality independent of the measurements. That is an electron has spin, location and so forth even when it is not being measured. I like to think that the moon is there even if I am not looking at it. Author: Albert Einstein

Questions and Answers

1.

Why can light be used to measure distances accurately? What must be known in order to make kistance measurements?
2.

What is the relationship between the actual brightness of a light source nad its apparent brightness from where you see it?
3.

How fast do X rays travel in a vacuum?
4.

Why do astonmers observing distant galaxies talk about looking backward in time?
5.

Do the brightest stars that you see in the night sky necessarily give off more light than dimmer stars?(explain)
6.

Which band of the electrmagnetic spectrum has the lowest frequency and shortest wavelength?
7.

Which of the following electromagnetic waves has the highest frequency?
- A.
  
  Radio
- B.
  
  Ultraviolet radiation
- C.
  
  Blue light
- D.
  
  Infreared radiation

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