Snells Law help

  • Thread starter samsungman
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  • #1
samsungman
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A certain kind of glass [tex]n_blue[/tex] = 1.650 for blue light and [tex]n_red[/tex] = 1.610 for red light. If a beam of white light (containing all colors) is incident at an angle of 30.0 degrees, what is the angle between the red and blue light inside the glass?

I use the Snell's equation:

[tex]n_1sin\Theta_1=n_2sin\Theta_2[/tex]

Hmm... I got 0.22 degrees. Is that correct?

I have another simple conceptual question:

An ideal gas is confined to a container with adjustable volume. The pressure and mole number are constant. By what factor will volume change if absolute temperature triples?

I guess it is 3 times the volume... or is it 1/3 the volume?

[tex]PV=nRT[/tex]
 

Answers and Replies

  • #2
Mentz114
5,432
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I guess it is 3 times the volume... or is it 1/3 the volume?
Do things expand or contract when they get hot ? If you take an empty plastic bottle with the cap firmly on from a warm room and put it in the fridge, what happens ?
 
  • #3
samsungman
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Oh yes, Volume is directly proportional to Temperature in this case, Thanks. 3 times the Volume then.
 
  • #4
samsungman
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Can anybody confirm with me for the first question I posted? Thanks.
 
  • #5
hage567
Homework Helper
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I can't see how you got 0.22 degrees. Can you show what you got for theta(red) and theta(blue)?
 

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