# Question from Fundamentals of Physics, 6th edition (exhanced) .

urgent!! question from "Fundamentals of Physics, 6th edition (exhanced)".....

Does anyone know what problem "N4" in chapter 34 is all about? (it's same as problem 48 in chpater 33 of the 7th edition.) it would be a great help if someone can just post the entire question. i'm only asking this is because i don't have those editions.. how come? long story... our instructor is actually using three versions of "Fundamentals of Physics", 6th, 6th enhanced, and 7th enhanced... who would buy three of them, especially if they're fundamentally the same thing...

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dav2008
Gold Member
So you don't have the book or what?

nope. who would buy all three versions? the instructor wasn't clear on this subject, so people in our class have different versions of the book.

The problem:
In Fig. 34N-2a, a light ray in a solid material is incident on a boundary with water (n = 1.33). Figure 34-2b gives two plots of the resulting angle of refraction $$\theta _2$$ versus the incident angle $$\theta _1$$, corresponding to two choices of the solid material. (a) Without calculation, determine whether the indexes of refraction of those solid materials are greater than or less than that of water. What is the index of refraction of the second material corresponding to (b) plot 1 and (x) plot 2?
Attached is the diagram.
Good luck!

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great! many many thanks!