physics paper 1,2 ........can we discuus da papper nw?

[MustafaMotani]

vishal the question asked why a substance with a small half life was NOT used.

I wrote it would give enough time to replace those barriers which they were replacing and that they wouldnt reqiure to replace material again and again .. .
Lame isnt it..

 

[MustafaMotani]

what is the 5 cm far question?

wats that.. ?

 

[vishal]

wats that.. ?

was about the position of X......

 

[MustafaMotani]

was about the position of X......

so wats 5cm there was nothing about it or was it.. ??

 

[MustafaMotani]

i dont remember the correct option but it was the one with the conv arrow pointing right and elec one pointing left..

well yeah but which column represented what. >.??

 

[vishal]

well yeah but which column represented what. >.??

i dnt remember clearly where i marked the postion of X..
bt look the frequency was 2hz....and the wavelenth was 2.5 cm....so after 1 sec..means 2 waves will be generated...as 1 wave is 2.5 cm ..then 2 waves wil be of 5 cm...so thats hw i marked the postion of x.


bt i dnt remember properly....

 

[vishal]

hy guys...bt wht do u thnk hw many marks cn i get out of 75.....around 68 or 70.....

 

[plantaholic]

well yeah but which column represented what. >.??

1st conv and 2nd elec

 

[MustafaMotani]

hy guys...bt wht do u thnk hw many marks cn i get out of 75.....around 68 or 70.....

0

 

[plantaholic]

i dnt remember clearly where i marked the postion of X..
bt look the frequency was 2hz....and the wavelenth was 2.5 cm....so after 1 sec..means 2 waves will be generated...as 1 wave is 2.5 cm ..then 2 waves wil be of 5 cm...so thats hw i marked the postion of x.


bt i dnt remember properly....

ok.. i just marked two waves for D.. since each wave was of 0.5 s...

 

[MustafaMotani]

1st conv and 2nd elec

Are u sure ?

 

[vishal]

ok.. i just marked two waves for D.. since each wave was of 0.5 s...

kkee......

 

[MustafaMotani]

vishal diagram was not drawn to scale u just had to make line btw two inphase points and mark D.
Make sure wavelenth comprised of two waves

 

[vishal]

bt guys mark me..

 

[MustafaMotani]

you'll get above 90 % dont brood

 

[khalil]

ok.. i just marked two waves for D.. since each wave was of 0.5 s...

Actaully the X mark was one wave skip . You had to use f= 1/t .

 

[MustafaMotani]

Actaully the X mark was one wave skip . You had to use f= 1/t .

frequency was given 2Hz :S

 

[khalil]

i dnt remember clearly where i marked the postion of X..
bt look the frequency was 2hz....and the wavelenth was 2.5 cm....so after 1 sec..means 2 waves will be generated...as 1 wave is 2.5 cm ..then 2 waves wil be of 5 cm...so thats hw i marked the postion of x.


bt i dnt remember properly....

ACTUALLY WRONG METHOD BUT SOME HOW RIGHT ANSWER :S . The drawing was not drawn to scale . t=1/f , were t is the time taken to make one complete wave . as a result it came to be known it takes .5 seconds for one wave . hence it takes 1 sec to make 2 waves so you make mark postion new one wave skip ( meaning at 2nd wave )

 

[khalil]

frequency was given 2Hz :S

its inter changeble , to find out time taken for a single wave

 

[vishal]

ACTUALLY WRONG METHOD BUT SOME HOW RIGHT ANSWER :S . The drawing was not drawn to scale . t=1/f , were t is the time taken to make one complete wave . as a result it came to be known it takes .5 seconds for one wave . hence it takes 1 sec to make 2 waves so you make mark postion new one wave skip ( meaning at 2nd wave )

hw come 5 second for 1 wave?