Physics Paper 12 How was it

[Ahmed Tariq]

The answer for the lamps related question was option D for sure..

What was the statement?

 

[Capricedcapri]

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

Omg u remember all mcqs....the moment I came out ov examination hall...almost all mcqs washed off my mind!!...seriously dude u have an awesum memory!!

 

[angelicsuccubus]

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

I chose mean seperation too.. I can't remember why now but at that time it seemed like the most sensible answer.. dont think its right though

 

[Knight]

u wont do the total mass....the mass of only 8 kg i think...coz forward force is being applied on that...

it was a repeated one
A is the ans
i also did it wrong first time

 

[Princess 123]

What was the statement?

Umm...smthng lyk this...;" green light and red light were on but they were dim"

 

[jammie]

yaar wat was da ans for da masss density one??

 

[jammie]

Umm...smthng lyk this...;" green light and red light were on but they were dim"

yaaar woh mass density of cube walay ka kiyaaa thaa???

 

[Princess 123]

yaar wat was da ans for da masss density one??

I thnk it was either B or C...Answer was smthng lye dis 10^-10!!

 

[jammie]

I thnk it was either B or C...Answer was smthng lye dis 10^-10!!

10^-16 nae tha??

 

[jammie]

q4 area of wire 3.84 tha ya 11.4??

 

[Princess 123]

10^-16 nae tha??

No it wasn't the answer..!

 

[Princess 123]

q4 area of wire 3.84 tha ya 11.4??

It was 11.4..

 

[good man12]

Is this formula even in our syllabus?
And could you kindly recall the displacement of the particle question?

yes, our sir taught it to us ...........so its gotta be..any ways i even searched on net and it was writtenthat wires with smaller cross section have greater drift velocity of electrons, the displacement one was the sine curve they gave, and we had to convert that velocity time graph to displacement time.

 

[good man12]

i put D but i think im wrong , 33 is the distance bet 2 maximams that means half wavelength not wavelength, so frequency=330/(33x2x10^-2) so period=2 ms.. the D option was period=1 ms i think :S

yeah the answer was B wher time period was 2 ms..

 

[good man12]

You Missed the question on the projectile one Answer was
(D) total momentum remains the same

no it was repeated the answer to that one was obvious ly A the there is zero acceleration in horizontal plane.

 

[good man12]

No it said distance between maximum and minimum, so it's lambda over four. A is the awnser.
Also how did you guys get 0.12??? I did area of trapezium and I got 0.8

it siad the cro detected a maximum then a minimum , then another maximum 33cm later, so distance between 2 antinodes was 33, therfore answer was B

 

[Princess 123]

no it was repeated the answer to that one was obvious ly A the there is zero acceleration in horizontal plane.

I also did A! Hope it's the correct one..

 

[ryabenz]

I am not sure about the exact wording of the question, but I read it more than once and it mentioned the time it took for be reflected also.

can i knw what question is this??

 

[ryabenz]

and the strain energy, how did some of u got 0.12J??

 

[avenger]

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