How was 9702 Physics paper 2

[Sharukh khan]

hi frnd how was the physics paper 2

 

[I Believe]

unexpectedly easy...
went well

 

[EpicInYourFace]

The paper was extremely easy,Obviously the threshold is going to be higher. Btw does anyone remember the electricity question?
What value for internal resistance did you guys get,for me it's was 2 ohms. Also what was the efficiency of the battery, my value came around 92%.

 

[EpicInYourFace]

Also what unit were you guys getting for question 1,I got M2 (Meter square )

 

[sharukh45]

The paper was extremely easy,Obviously the threshold is going to be higher. Btw does anyone remember the electricity question?
What value for internal resistance did you guys get,for me it's was 2 ohms. Also what was the efficiency of the battery, my value came around 92%.

yesss yess it was 2o ohm

 

[sharukh45]

Also what unit were you guys getting for question 1,I got M2 (Meter square )

question 1 which part ? yaar 2 parts thay i think second part ka meter tha srf. not meter square ?

 

[sharukh45]

The paper was extremely easy,Obviously the threshold is going to be higher. Btw does anyone remember the electricity question?
What value for internal resistance did you guys get,for me it's was 2 ohms. Also what was the efficiency of the battery, my value came around 92%.

i think yes it was 92 percent .

 

[EpicInYourFace]

yesss yess it was 2o ohm

I think so your mistaken its was 2 not 20 but i do remember a friend saying it was 20.

 

[EpicInYourFace]

question 1 which part ? yaar 2 parts thay i think second part ka meter tha srf. not meter square ?

Q1 part 2. Im pretty sure it was meter square as towards the end we got the constant square(I dont remeber the letter)= meter 4 ,I just the toke a square root.

 

[Sidhant Vaidya]

Since the Question asked to find the units of C, which was the size of the nozzle, i.e. area, m^2 is the correct answer I believe.

My friend and i both got exactly 88% in the efficiency questions tho.

 

[EpicInYourFace]

A

Since the Question asked to find the units of C, which was the size of the nozzle, i.e. area, m^2 is the correct answer I believe.

My friend and i both got exactly 88% in the efficiency questions tho.

Yah,A couple of my friends got 88% also.What did you get for the internal resistance.

 

[sharukh45]

I think so your mistaken its was 2 not 20 but i do remember a friend saying it was 20.

yaah its 2 ohms i forgot to give space between "2 and ohms"so you misread it. actually first i also got 20 ohms first but i thought that internal resistance is normally less then 5 so i tried another method and got 2 ohms btw how did you calculated efficiency?

 

[EpicInYourFace]

yaah its 2 ohms i forgot to give space between "2 and ohms"so you misread it. actually first i also got 20 ohms first but i thought that internal resistance is normally less then 5 so i tried another method and got 2 ohms btw how did you calculated efficiency?

Dude you scared me there,BTW how did you find the stress and the last part of the questions(I forgot what is was).I just used the value given for the increase to find it.

 

[sharukh45]

Dude you scared me there,BTW how did you find the stress and the last part of the questions(I forgot what is was).I just used the value given for the increase to find it.

i used increased value of strain and find the stress. bcz young modulas would give the same asnwer either you used increase value or orignal value. and in last part as we have all values we have stress and strain and the value of young modulas. i just put the values in formula of young modulas BUT in stress i wrote "the value of stress/(diemetre)^2/2 multi ply by pi and solve for dimeter . now you tell what did you do ?

 

[EpicInYourFace]

i used increased value of strain and find the stress. bcz young modulas would give the same asnwer either you used increase value or orignal value. and in last part as we have all values we have stress and strain and the value of young modulas. i just put the values in formula of young modulas BUT in stress i wrote "the value of stress/(diemetre)^2/2 multi ply by pi and solve for dimeter . now you tell what did you do ?

I'll try my best remembering it.,BTW how much are you expecting

 

[EpicInYourFace]

i used increased value of strain and find the stress. bcz young modulas would give the same asnwer either you used increase value or orignal value. and in last part as we have all values we have stress and strain and the value of young modulas. i just put the values in formula of young modulas BUT in stress i wrote "the value of stress/(diemetre)^2/2 multi ply by pi and solve for dimeter . now you tell what did you do ?

I been trying to remember the question,but I can't, Sorry.Btw do you remember any other questions so I can refresh them in my mind(Besides the radioactivity one).

 

[Sidhant Vaidya]

Q1 - finding the units of pressure and finding the units for C.
Q2- The Ball rolling down and hitting a wall question. Finding the velocity and PE Etc.
Q3- The one where a bar is held off a wall and supported using another bar. A 12N weight is tied to the end. Need to also find the Stress and diameter of the wire.
Q4- The Slit experiment where we have to find the distance D, etc
Q5- the electricity one where we have to find the internal resistance and Current (.40A)
Q6- Radioactivity( decay of proton) a hadron and lepton differentiation what caused the decay and the elementary to +e charge change .