Physics Paper 12 How was it

[jammie]

mass density walay ka kiyaa tha???

 

[good man12]

yaaaar yeh link khul hi nae rahaaa..

click on the link and in a browser like chrome the file will get downloaded

 

[good man12]

mass density walay ka kiyaa tha???

C ( 3.4x10^-10 m)

 

[ryabenz]

i suppose 24 hours are gone and so here is the list i made.........

what was question 31?? can u rmbr the details coz i cnt exactly rmrb the question..

then num 13, to calculate pressure of the gas, i thought we should add up the atm too rite??

 

[omg]

and wht was the ans of that qs wid the micrometer, we had 2 find the are of the wire ryt?

 

[good man12]

and wht was the ans of that qs wid the micrometer, we had 2 find the are of the wire ryt?

yeh area, 11.4

 

[WhereAmazingHappens]

i think your 9th is not correct.. i think... becuaue ice was frictionless but the wall was rough.. so frictional component was always there.. so answer was B..

no D is correct i think, i cant rmember the options

 

[ryabenz]

and wht was the ans of that qs wid the micrometer, we had 2 find the are of the wire ryt?

i got B..

 

[donorsolutions]

what was question 31?? can u rmbr the details coz i cnt exactly rmrb the question..

then num 13, to calculate pressure of the gas, i thought we should add up the atm too rite??

No we didnt had to add the atmospheric pressure..just had to calculate the pressure of Gas.

 

[WhereAmazingHappens]

i suppose 24 hours are gone and so here is the list i made.........

good work man, i dunno how u remembered them

 

[good man12]

what was question 31?? can u rmbr the details coz i cnt exactly rmrb the question..

then num 13, to calculate pressure of the gas, i thought we should add up the atm too rite??

actually 31 wasnt the momentum 1, i numbered them in the order i remembered them, but it was the one where two balls collide about restitution....repeated mcq and in pressure one i didnt add atmospheric pressure because since the cross sectional area of test tube is very small the force exerted by atmosphere is negligible

 

[ryabenz]

no D is correct i think, i cant rmember the options

just to confirm..in tht ladder question, it was stated tht "when the ladder is just about to fall"..does it mean it is falling or in equilibrium?? check out paper May/June 08, num 14..in this question, the ladder is at rest and is not moving

 

[donorsolutions]

and wht was the ans of that qs wid the micrometer, we had 2 find the are of the wire ryt?

11 mm2.. and yes we had to find the area.

 

[ryabenz]

actually 31 wasnt the momentum 1, i numbered them in the order i remembered them, but it was the one where two balls collide about restitution....repeated mcq and in pressure one i didnt add atmospheric pressure because since the cross sectional area of test tube is very small the force exerted by atmosphere is negligible

oh ok..i remember tht question now..but yeah, i got D..then y did u put A?? they did change the options compared to previous years

 

[good man12]

just to confirm..in tht ladder question, it was stated tht "when the ladder is just about to fall"..does it mean it is falling or in equilibrium?? check out paper May/June 08, num 14..in this question, the ladder is at rest and is not moving

i got really confused in ladder one between C and D, in C the reaction force was opposing the ladder, i thought it was C because in limiting equilibrium, friction acts against motion, then since question said friction less i though D was a better force diagram to show the motion...but em doubt full

 

[good man12]

oh ok..i remember tht question now..but yeah, i got D..then y did u put A?? they did change the options compared to previous years

yeah, option changed.......

 

[ryabenz]

i got really confused in ladder one between C and D, in C the reaction force was opposing the ladder, i thought it was C because in limiting equilibrium, friction acts against motion, then since question said friction less i though D was a better force diagram to show the motion...but em doubt full

i got confused too..most of my frens answered either B or D..

 

[ryabenz]

the strain energy question, just calculate the area undr the graph rite..but i din really get B..n when i calculated using the smaller boxes, i got A
n question num 16, if u heat the gas, i thought the kinetic energy increases n so the collision increases right?? i answered the statement with the mean separation

 

[good man12]

the strain energy question, just calculate the area undr the graph rite..but i din really get B..n when i calculated using the smaller boxes, i got A
n question num 16, if u heat the gas, i thought the kinetic energy increases n so the collision increases right?? i answered the statement with the mean separation

they gave a point in the question that the pressure remains constant, so then the frequency of collisions remains same.....if the collisions increased the pressure should have also increases, .the seperation does increase when heated and expanded, and they asked which statement does NOT occur..in strain energy i drew 1 triangle and 2 trapeziums and got o.123, since in questions it was 2 sig fig so 0.12 was fine.

 

[fathimaash]

24.. lowest resistance was of 2nd one i think.... one of us has to be wrong...

ya evn i got da 2nd one wit low resistanc