Physics Paper 12 How was it

[ryabenz]

what was the answer to the experiment question? i did D. was a bit confused b/w B and D

i answrd B

 

[Henry930821]

For the electric field strength question, the answer for the graph was the one with a constant force (straight line with zero gradient) right?

 

[ryabenz]

For the electric field strength question, the answer for the graph was the one with a constant force (straight line with zero gradient) right?

yes

 

[ryabenz]

the crystal question, how do u do it actually??

 

[hemant]

k dude u knw da friction is 6N
so force-friction=resultant (ma)
force= 2*10=20N friction=6N total mass is 8+2=10N substitue in da eqn
20-6=10a
a=1.4ms-2
hope u get it..

You can't take g as 10 in physics you have to take it as 9.81 and you get 1.70.Dont get confused between physics and mechanics.

 

[fathimaash]

You can't take g as 10 in physics you have to take it as 9.81 and you get 1.70.Dont get confused between physics and mechanics.

k den check dis question nd da answer
Q11.....

 

[MOMO123123]

You can't take g as 10 in physics you have to take it as 9.81 and you get 1.70.Dont get confused between physics and mechanics.

this is how u do it:
first equation is from the 2kg body: 2(9.81)-T=2a
on 8kg body: T-6=8a
similtanoues equation by elimination ull get 2(9.81)-6=2a+8a
solve for a, a=1.362=1.4

 

[Idolfanatic95]

yeah what was it again?

I dont remember the exact ques but it was D defo. In the past papers there was a ques of the same sort which ahd the anser "A" but in paper they changed it.

 

[Idolfanatic95]

What was the statement?

It was sumthin lyk, Both lamps are switched on dimly

 

[Idolfanatic95]

For the electric field strength question, the answer for the graph was the one with a constant force (straight line with zero gradient) right?

Yes right. repeated one.

 

[aom]

For the electric field strength question, the answer for the graph was the one with a constant force (straight line with zero gradient) right?

no it was C the decreasing line because this time they changed the question, they said plate seperation, but in the past years they said the distance of the particle from the plate.

 

[sahania]

I dont remember the exact ques but it was D defo. In the past papers there was a ques of the same sort which ahd the anser "A" but in paper they changed it.

No , it was same ... i got the same answer in the paper as well ...

 

[Idolfanatic95]

No , it was same ... i got the same answer in the paper as well ...

Well whtever it was, its answer was D

 

[leosco1995]

no it was C the decreasing line because this time they changed the question, they said plate seperation, but in the past years they said the distance of the particle from the plate.

They asked how the electric field varied from point X to point Y, both of those points being part of the electric field. I didn't see plate separation mentioned anywhere.

 

[good man12]

You can't take g as 10 in physics you have to take it as 9.81 and you get 1.70.Dont get confused between physics and mechanics.

actually that was repeat MCQ and answer was A, 1.4

 

[MOMO123123]

i answrd B

why B? and what was B? can u plz explain, cz i remember calculating g and it was accurate.. so how can it be not accurate.. i dont really remember the choices, i remember the first 2 were inaccurate and the last 2 were accurate..

 

[good man12]

why B? and what was B? can u plz explain, cz i remember calculating g and it was accurate.. so how can it be not accurate.. i dont really remember the choices, i remember the first 2 were inaccurate and the last 2 were accurate..

nopex...option B was that the calculated value of Gwas accurate but the students reading were in accurate and not always up to the precisionof the timing device, all points were valid....option D lacked physics essence by saying " it can be considered successful"..it didnt give a justification of why!!!

 

[xcalibur]

agreeing on the option B . The last option did not give any specifics to why the experiment was successful and one reading really wasn't up to 2 dp which it shuld have been.
The question on the current and the speed of electrons... I put same speed as well... can anyone confirm?

 

[good man12]

agreeing on the option B . The last option did not give any specifics to why the experiment was successful and one reading really wasn't up to 2 dp which it shuld have been.
The question on the current and the speed of electrons... I put same speed as well... can anyone confirm?

the currebt one was a tough one, you had to use velocity of electron formula I=navq...so since area and velocity are inversely proportional to each other, the speed will increase....and im confirmed on this...but i know 95% candidates did same speed ! ahahahhaha

 

[Most_UniQue]

@ gud man,,,the gas could not have pushed the other side of the liquid without having pressure greater than atm pressure...o level concept

wghich option was wl/4 clockwise? Cuz i dont remember which one mine was , clockwise or anti