2010oct phy qQ

[niassu]

http://www.xtremepapers.me/CIE/Cambridg ... _qp_33.pdf
Q 10 (a) mark scheme donot help
plz i dont have time just draw or even give guidelines

 

[unplugged]

 

[ChrisChin]

Method:

- Draw a normal from point S to reflector
- Extend normal to other side
- Open compass to distance of S from intersection of normal and reflector (place needle point of compass at intersection, pencil point at S)
- Mark equal distance on extended normal -- this is point R [ 10(a)i ]

[BEGIN] [ 10(a)ii ]
- Place needle point on R, open compass so that the pencil point is at intersection of wavefront and reflector.
- Draw arc from this point to next intersection.
- Repeat from [BEGIN] for each of the other wavefronts.

 

[niassu]

Method:

- Draw a normal from point S to reflector
- Extend normal to other side
- Open compass to distance of S from intersection of normal and reflector (place needle point of compass at intersection, pencil point at S)
- Mark equal distance on extended normal -- this is point R [ 10(a)i ]

[BEGIN] [ 10(a)ii ]
- Place needle point on R, open compass so that the pencil point is at intersection of wavefront and reflector.
- Draw arc from this point to next intersection.
- Repeat from [BEGIN] for each of the other wavefronts.

thnx alot

 

[ChrisChin]

You are welcome. Like the siggy, by the way. "Life is what you make it." Sometimes "Life is how you see it." Or the Physics Club favourite -- "There is no gravity -- the Earth sucks." xP