Phy ATP

[aitikhan]

AOA guys.. What is the answer for the question abt average in first part... Will they accept 4 significant figures?
And for the focal length is this answer correct..
Take an object, lens and a white card/bard. Move the card until the image distance is equal to the object distance...
This is 2F. Now divide by 2... Is my answer correct?

 

[abcde]

W.S, aitikhan!
We can't discuss the paper before 24 hours. Hope you understand.

 

[aitikhan]

Ohhh, Ok, I didn't know that.

 

[abcde]

It's one of XPF rules. You can read them all in the Announcements section. Thank you.

 

[aitikhan]

Ok, but 1 min is left in 24 hours, after the paper was handed over to us us

 

[abcde]

Yes, then you can. No problem now!
If you really want to know, they basically accept 2 to 3 significant figures. Secondly, as far as I know, that distance was not 2F (it was F) so no division by 2 was involved.
I would advise you to refrain from paper discussions because from my own experience, I've seen they make one more tensed and waste your time. Why not leave them (you're done with them now and it can't be changed) and focus on the papers ahead. Best of luck for all your subjects!

 

[Usman17]

@abcde: through discussion the mistakes can be identified and perhaps some of these concepts could come in handy in the theory or mcq paper...!!!

 

[Soulgamer]

@abcde: through discussion the mistakes can be identified and perhaps some of these concepts could come in handy in the theory or mcq paper...!!!

agreed!

 

[abcde]

Hmm.. Good point! I had the English/Urdu papers in mind while saying this. Go on now...

 

[no.mercy]

you have to write in 3 significant figures because all the other values of time were in 3 figures...i know the answer was coming out in four sig figures but the answer should be in 3 sig figures

 

[Silent Hunter]

nd the question also asked to rite in appropriate number of s.f. i if remember correclty

 

[sksuriza]

u r rite

 

[Usman17]

The correct answer of dat one was 175 as far as... I rounded it off from 175.2..!

 

[Silent Hunter]

yep......i also think it was 175

 

[sksuriza]

it is it

 

[Muhammad Talha]

Me also with 175...