Biology; Chemistry; Physics: Post your doubts here!

[asadalam]

0.504 kg to be exact
and the next one was 114353 or something

 

[asadalam]

Ok i got confused in first parts. i thought they were equal but then i said that forward was more cuz lorry was moving/accelerating in forward direction. and in backwrd force i wrote friction :/ . how many marks am i losing here

These are correct,friction is a backwards force,where do you think you're wrong?

 

[DaniyalK]

Ok i got confused in first parts. i thought they were equal but then i said that forward was more cuz lorry was moving/accelerating in forward direction. and in backwrd force i wrote friction :/ . how many marks am i losing here

I don't see anything wrong with that...

 

[Fate0]

These are correct,friction is a backwards force,where do you think you're wrong?

Ikr. For a moment i was like wut ._.

 

[Lilly2318]

These are correct,friction is a backwards force,where do you think you're wrong?

THANK U. i was going through this forum nd i thought was wrong

 

[Fate0]

What did you guys do for the lens one? Where we had to write the values for more than 1 cm and less than 1 cm?

 

[asadalam]

What did you guys do for the lens one? Where we had to write the values for more than 1 cm and less than 1 cm?

For first any value below f(2.8)
For 2nd any value above 2f(5.6)

 

[Mazin Junaid]

btw how much was the pressure?

333333.3 Pa

 

[Lilly2318]

What did you guys do for the lens one? Where we had to write the values for more than 1 cm and less than 1 cm?

I literally got this whole Q wrong.

 

[DaniyalK]

What did you guys do for the lens one? Where we had to write the values for more than 1 cm and less than 1 cm?

I'm not sure about that one, but for less than 1 cm, I wrote 3.5 cm because image is diminished when f < v < 2f and for more than 1 cm, I wrote 6 cm, because image is magnified when v > 2f

 

[Lilly2318]

For first any value below f(2.8)
For 2nd any value above 2f(5.6)

at last moment i panicked nd converged the two beams . examiner will give a 0 write
in the above , i wrote one 0.9 and other i dont remeber

 

[M.Omar]

I'm not sure about that one, but for less than 1 cm, I wrote 3.5 cm because image is diminished when f < v < 2f and for more than 1 cm, I wrote 6 cm, because image is magnified when v > 2f

thn consider ur uncertainity void;The answers r correct

 

[Fate0]

For first any value below f(2.8)
For 2nd any value above 2f(5.6)

OMG.
I did the same thing :O
God bless.

 

[Lilly2318]

For first any value below f(2.8)
For 2nd any value above 2f(5.6)

can i get A in phy if i lose 15 marks in Phy ?

 

[Lilly2318]

OMFG.
I did the same thing :O
God bless.

Sorry but ethically u shud remove that F

 

[asadalam]

thn consider ur uncertainity void;The answers r correct

how?It said after the light leaves the lens?Before f they will converge and the beam would get smaller,while after 2f beams would return to original width and then get wider

 

[Lilly2318]

how?It said after the light leaves the lens?Before f they will converge and the beam would get smaller,while after 2f beams would return to original width and then get wider

can i get A in phy if i lose 15 marks in Phy ?

 

[Fate0]

Sorry but ethically u shud remove that F

Good call.
And han 85% par tu A aa jaye ga.

 

[Lilly2318]

Good call.
And han 85% par tu A aa jaye ga.

not 80 ??????????

 

[Abdul Hanan]

can i get A in phy if i lose 15 marks in Phy ?

you can get an A*
with only 15 marks cut
as grade boundary always fall atleast 1-2%