# Homework Help: Refraction Problem- very easy but need help

1. Jan 9, 2008

### physicsbhelp

[SOLVED] Refraction Problem- very easy but need help

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Last edited: Jan 9, 2008
2. Jan 9, 2008

### Shooting Star

Where is 180 deg coming from? What is the angle of refraction from liquid to air? What is the corresponding angle in the liquid?

3. Jan 9, 2008

### Shooting Star

The eqn is right.

4. Jan 9, 2008

### Shooting Star

Look at theta2, by which I presume you mean the angle of refraction into air. Does it look like 180 deg?

5. Jan 9, 2008

### Shooting Star

Yes, "theda2" would be 90 deg.

6. Jan 9, 2008

### Shooting Star

You're almost there. Check your thedas, which one goes where.

(Here again, sin theda1 > 1.)

7. Jan 9, 2008

### Shooting Star

Yes and N2=1. (RI of air.)

8. Jan 9, 2008

9. Jan 9, 2008

### physicsbhelp

THANK YOU SO MUCH FOR YOUR HELP SHOOTING STAR! you are the BEST!!!!!!!!!!!!!!

10. Jan 9, 2008

### olgranpappy

what am I? chopped liver?

11. Jan 10, 2008

### Shooting Star

Dear physicsbhelp,

The way you are deleting your own posts I find hilarious, though I don't know why you are doing it. I must share this with others. Hope you don't mind.

12. Jan 10, 2008

### Staff: Mentor

Stop playing these games (deleting your posts after getting help) or you will soon find yourself unable to get any help. :grumpy:

To the helpers: Please report this kind of activity.