Answers to homework questions on refraction

Q13.

 

 Q14

Q15.

Total internal reflection:  (1) either: going from more dense to less dense media OR wave speed increasing

                                     (2) angle incident to boundary must be greater than the critical angle

Q16.

 

 

 

 

 

 

 

 

(a)

37.4

 

(b)

48.7

 

n =

1.5

 

 

 

 

Q17

19.5

 

Q18

58.98

 

Q19

24.4

 

Q20

1.53

 

Q21

18.58

 

Q22

light is slowed down tho' water

 

sound travels faster thro' water

 

Make your own free website on Tripod.com