Qualification > Sciences

P1 CIE physics doubts

<< < (15/18) > >>

sweetie:
nov07
Q35, 26, 25and 6

astarmathsandphysics:
26. the electric field points in the direction of the force on a positive charge. The charge on an electron is negative so the force points the other way, to the left.
25. 4th sinx=nw/d<1
If n=3 sinx=0.707 so w/d =0.707/3
nw/d<1 if n=4 but not n=5
6.A deflection +ve when current =0 so A or B
deflection increases more atr start so A

sweetie:
Sir, can u xplain Q25 and 6 again plz???????

astarmathsandphysics:
as soon as you find w/d=0.707=0.236 use sinx =n*0.236
this has to be less than 1 to give a solution for x
If n=4 sin x =0.944 solutions exist
n=5 sin x =1.18 no solutions

sweetie:
got it now,
cud u plz xplain Q35 too??????

Navigation

[0] Message Index

[#] Next page

[*] Previous page