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ALL CIE PHYSICS DOUBTS HERE !!!

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Rvel Zahid:
hi everyone, hope your preparation is going well. best of luck to all for exams.
some past paper problems:-
http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w07_qp_1.pdf
 23 , 24 and 25

http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w06_qp_1.pdf
q. 27

Physics09:
Q 24: Wavelength is directly proportional to fringe separation . Fringe separation or the distance between two successive dark/bright fringes or according to this question, 'line', increases with a longer wavelength. So answer is D.
Fringe separation is indirectly proportional to distance b/w the slits.
and directly proportional to the distance b/w the slits and the screen.
Hope it helps!

Physics09:
Thank you! Yes anybody please answer the rest of the questions!

Most UniQue™:
    23. frequency=8/50=0.16hz
    Maximum speed of P=2 x 3.14 x 2 x 0.16=2.01
    Max K.E.=1/2 x 0.002 x (2.01)^2=4.0mJ
    B is answer.
    25. d sin (theta)=nlamda
    Equation 1: d sin 45=3l Equation 2: d sin(90)=nl
    Divide Equation 1 by 2: sin 45=3/n
    so n=4.2426..... and you have to round down to the nearest integer which is 4.
    Answer is B.

Rvel Zahid:
Thankyou so much muscle nerd and physics09!!


http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s09_qp_2.pdf

paper21 : Q.5

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