Phy mcq,, together ?? xat

[xhizors]

AsSalamalaikum wr wb

i was thinking to solve some papers online together for acing phy paper..

http://xat.com/PhyMCQp1

let roll in and do it ..

 

[xhizors]

ok paper live
http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w11_qp_13.pdf

 

[thunderingthunder]

AsSalamalaikum wr wb

i was thinking to solve some papers online together for acing phy paper..

http://xat.com/PhyMCQp1

let roll in and do it ..

Excellent idea it is

 

[xhizors]

Excellent idea it is

lets do it ,, come online

 

[xhizors]

help me with this question any one plz q3 s10/p12 plz plz

 

[thunderingthunder]

help me with this question any one plz q3 s10/p12 plz plz

We have been provided with the values of mass,volume and density.The mass of the liquid used is calculated by 70-20=50g
Now we have to calculate the uncertanity in the value of the mass calculated which can be done as follows:
Δm/50= (1/20)-( 1/70)
Δm=1.78=2(errors are always written up to 1 significant figure)
Error in density=?
Δd/5=(2/50)+(0.6/10)
Δd=0.5g/cm^3
Hence,the answer is B
Hope this helped