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ALL PHYSICS DOUBTS - POST HERE !!

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mdwael:
can someone explain me question 11 (the last one) in oct/nov paper 3 physics year 2007? pls save my life cuz tommorow is my exam  :-[

Malak:

--- Quote from: A@di on May 26, 2010, 05:33:37 pm ---of course u can that, it has the hot junction / cold junction the wires..and the meter..

--- End quote ---
Okay...thx Thats muchh eaiser :D

Q1 both parts..

http://www.freeexampapers.us/IGCSE/Physics/CIE/2009%20Nov/0625_w09_qp_32.pdf

Malak:

--- Quote from: mdwael on May 26, 2010, 05:35:24 pm ---can someone explain me question 11 (the last one) in oct/nov paper 3 physics year 2007? pls save my life cuz tommorow is my exam  :-[

--- End quote ---

For part a

First you take counter readings without any source or absorber only detector...This is the background
Then you take reading with Source and detector
Then take reading with source , detector Plus absorber which is aluminium in this case (one sheet at a time..u keep adding and take reading)
Finally subtract the background reading from the result

Part b:
The counter readind decreases as the thickness of aluminium is increased

holtadit:
Can someone please explain what voltage drop is ???

Malak:

--- Quote from: Ari Ben Canaan on May 26, 2010, 05:41:32 pm ---Can someone please explain what voltage drop is ???

--- End quote ---
2009 nov ?:P

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