Qualification > Sciences
Edexcel PHYSICS Doubts
The Golden Girl =D:
Attached.
My exam is tomorrow so please reply ASAP !
Hmm I need an explanation for :
in Section A in Q 5 , I just want to know why is it ODD , is it Always ODD ? *I thought it shouldn't be a whole number and that's it.* ,so let me know Please !
Section B
Q. 14]c) , 19]c) *I need a diagram of it :-\ * , 21]c)ii)
Thanks in advance :D
rameeziiii:
--- Quote from: The Golden Girl on June 05, 2011, 06:17:57 pm ---Attached.
My exam is tomorrow so please reply ASAP !
Hmm I need an explanation for :
in Section A in Q 5 , I just want to know why is it ODD , is it Always ODD ? *I thought it shouldn't be a whole number and that's it.* ,so let me know Please !
Section B
Q. 14]c) , 19]c) *I need a diagram of it :-\ * , 21]c)ii)
Thanks in advance :D
--- End quote ---
it is an odd number of half wavelengths. the half wavelength gives a path difference of 1/2 lambda or 180 antiphase compared to the original wave. thus when superimposition occurs, destructive interference occurs. if the difference is of even number of half wavelengths or whole numbers of wavelengths, the phase difference is 0 and thus constructive interference will occur.
The Golden Girl =D:
I get the thing about the Odd :)
Malak:
For 19 c..Is the same like how blue light refracts, but since red has a shorter wavelength it will be refracted less than blue light. If you wanna be accurate than measure the angle of refraction for blue light then then draw the line for red.
The Golden Girl =D:
I'll scan my answer so that you tell me if it's right or not :)
EDIT: Attached.
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