Qualification > Sciences
ALL CIE PHYSICS DOUBTS HERE !!!
$!$RatJumper$!$:
--- Quote from: TJ-56 on November 09, 2010, 12:53:57 pm ---I didnt understand ur question, the qp though implies that only half a wavelength should be drawn, (difference between 2 loud sounds)
--- End quote ---
it just simply says sketch the form of the stationery wave set up in the tube. no mention of only half a wavelength
TJ-56:
w08 q6 (b)
can someone state 2 acceptable experiments?
for the first one i drew a light source and an obstacle, where light is diffracted and an eye at the other end, which observes the diffracted light (and cannot see the source)
for the second one i drew a person shouting, with an obstacle in front of him, and an observer behind the obstacle , where the observer can hear the shouting after being diffracted
Are these correct responses?
thanx in advance
TJ-56:
--- Quote from: $!$RatJumper$!$ on November 09, 2010, 01:08:34 pm ---it just simply says sketch the form of the stationery wave set up in the tube. no mention of only half a wavelength
--- End quote ---
Ok what do u mean by certain rules?
The tube on the left show an anti node at the top,
To find the NEXT antinode, half a wavelength is drawn,
if we were to draw a complete wavelength instead, 3 anti nodes will result, but they want the NEXT antinode, which is formed by drawing half a wavelength
sorry but i dont know how to explain it more than that,
did that cover ur question?
maybe i didnt fully understand ur que
$!$RatJumper$!$:
oh right :) yeas that makes sense now. thankx a lot man
$!$RatJumper$!$:
--- Quote from: TJ-56 on November 09, 2010, 01:19:19 pm ---w08 q6 (b)
can someone state 2 acceptable experiments?
for the first one i drew a light source and an obstacle, where light is diffracted and an eye at the other end, which observes the diffracted light (and cannot see the source)
for the second one i drew a person shouting, with an obstacle in front of him, and an observer behind the obstacle , where the observer can hear the shouting after being diffracted
Are these correct responses?
thanx in advance
--- End quote ---
I drew a light source with a cardboard with a slit in it to act as the place where the diffraction will occur. Then a screen where the diffracted light will be seen.
In your case I dont think we can use an eye as a suitable detection media. We will need to use some sort of equipment in order for us to interpret/observe the diffracted light.
For the second one i simply drew a sound source with a small obstacle and had a microphone and cathode ray oscilloscope on the other end to see the wave pattern on the CRO.
I think your second one is fine.
You may want to check the mark scheme to see what cambridge are looking for exactly in your answers
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