Go Back   Physics Help Forum > High School and Pre-University Physics Help > Electricity and Magnetism

Electricity and Magnetism Electricity and Magnetism Physics Help Forum

Reply
 
LinkBack Thread Tools Display Modes
Old Apr 3rd 2017, 11:02 AM   #1
Junior Member
 
Join Date: Apr 2017
Posts: 2
Light and Refraction

So I have a homework problem that I am confused about. The problem is:

An insulated light bulb is at the bottom of a swimming pool 2.5m from the wall. The pool is 2.5m deep and is completely filled with water. At what angle does the light break the water at the edge of the pool? N for water is 1.33.

If someone could explain, that would be great
gspsaku is offline   Reply With Quote
Old Apr 3rd 2017, 11:10 AM   #2
Senior Member
 
Join Date: Apr 2015
Location: Somerset, England
Posts: 452
Have you heard of Snell's Law ?
studiot is offline   Reply With Quote
Old Apr 3rd 2017, 11:16 AM   #3
Junior Member
 
Join Date: Apr 2017
Posts: 2
Originally Posted by studiot View Post
Have you heard of Snell's Law ?
No, we just covered that C1/C2 = N1SinTheda1/N2SinTheta2. No idea what Snell's law is. We did one two examples in class but it was more basic where we were given the wavelength and the N and asked to find the speed.
gspsaku is offline   Reply With Quote
Old Apr 3rd 2017, 12:12 PM   #4
Senior Member
 
Join Date: Apr 2015
Location: Somerset, England
Posts: 452
Yes you have, you just don't realise it.



Snell's law covers the refraction situation you have just stated the formula for.

Have a look at the diagram and the references in the link at the bottom, and compare with the information from your lectures.

When a light ray passes from a lmore dense medium (water) to a less dense medium is it refracted towards or away from the normal? Or if you like does it travel faster in the more or less dense medium?

https://www.google.co.uk/search?hl=e...uKuzuPoE#spf=1
studiot is offline   Reply With Quote
Reply

  Physics Help Forum > High School and Pre-University Physics Help > Electricity and Magnetism

Tags
light, refraction



Thread Tools
Display Modes


Similar Physics Forum Discussions
Thread Thread Starter Forum Replies Last Post
Refraction of light hollysc Light and Optics 2 Dec 18th 2013 04:23 AM
Mechanism in Refraction of Light morrobay Light and Optics 11 Dec 1st 2013 05:52 PM
Refraction of Light Aruj Light and Optics 4 Feb 17th 2011 12:43 PM
Total internal reflection and refraction index in optical fiber and speed of light ATH500 Light and Optics 3 Apr 2nd 2009 11:13 PM
Conceptual light reflect/refraction problem tcrocRE Light and Optics 4 Mar 22nd 2009 10:26 PM


Facebook Twitter Google+ RSS Feed