Physics Paper 4 : Guesses and Questions >> Post Here <<

[mury456]

hey ppl,

Monday is physics paper 4 !
so yea post your doubts and any guesses of what might be coming this year.

heard from an extremely reliable source that the Attenuation Question would be appearing in the section B part of the paper involving some difficult calculation.

please keep posting here until we appear for our Paper 4.

Best of Luck !

 

[zashiq83]

w10/42 question 7 please

 

[mury456]

w10/42 question 7 please

Awryt ...
7)a)i)
The evidence for wave nature is proved by De Broglie's wavelength.
if an electron beam hits a carbon film a diffracting pattern is seen on the florescent screen on the back and appears to be in circular formation.
increasing the velocity increases the the ring separation.

7)a)ii)
The evidence for particulate nature of electromagnetic radiation was proved by Albert Einstein.
in his equation e= m c^2
describe the photoelectric effect.

7)b)i)
6

7)b)ii)
change in energy = 5.44 × 10^-19 - 0.87 × 10^-19 = 4.57 × 10^–19 J
λ = hc / E
= (6.63 × 10^–34 × 3.0 × 10^8) / (4.57 × 10^–19)
= 4.4 × 10^–7

 

[mury456]

heard something else ...

continuous spectrum can come ... 80% chances are there.

If anyone has a revision page for Continuous spectrum please post.

 

[mury456]

CAN SOMONE PLEASE POST THE A2 LEVELS ENTIRE LIST OF FORMULAS ???

would be good for revision

 

[zashiq83]

Thanks. And the list of formulas is very much required too...

 

[zashiq83]

s09/4 question 4 (b) please