Physics 2012 MCQ review

1.The newton N is  a derived unit and its base unit is MLT-2
. So the all others are base quantities like m , kg , s , K , l .

2. Force is inversely proportional to the square value of the separation between the two center of bodies. so when the ditance is  doubled the force is decreased by a factor of four.

3.This type of questions have widely appeared in the past papers and the center of gravity can be found by connecting the line joining the midpoints of the two boxes and finding the point that lies on the interception. 

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2012 physics a level answer marking

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the reason for the wire to be wide in one of the heat question ,is that the resistance will be less, and also the area exposed for heat loss is more

Sri Lanka advanced level general english past papers

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G.C.E A/L 2012 Physics MCQ official answers

　
2012 G.C.E A/L Physcis MCQ answers are released,

2 2 3 1 3
5 2 4 4 3
1 4 5 1 4
3 2 3 3 4
1 1 4 5 4
3 2 1 3 all
1 5 3 1 4
2 4 5 5 1
2 5 4 1 5
1 4 1 2 2

 

If you have any further inquries please ,leave a comment.

Chemistry 2012 A level MCQ answers and paper discussion Old syllabus and new syllabus

Old syllabus Mcq

1. The number of elements in the first four periods of the peiodic table is 36

 in first period 2

    second       8

    third           8

    fourth         18 

 

 add these values and you will get the answer       

2.           

New syllabus mcwq

1.

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2012 Sri Lankan A Level Biology MCQ discussion

I dont know exactly the question number but there was a question saying "which od the following diseases are inheritable?" and also there was an answer "aids"
.
Now many clever students wrote that aids is also a inherited disease.Actually inheritance has got to do with genes and dna .Aids is not transferred through the genes of a mother to child,but by blood tranfusion happening in the placents during birh.