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  1. U

    Physics MCQs thread.

    i also got it. thnku :p
  2. U

    Physics MCQs thread.

    hmm... ur right. now we shud w8 for sum1 intelligent to answer this question :Search: :cry: :crazy: :%) :(
  3. U

    Physics MCQs thread.

    we find work by multiplying the force with the parallel distance so work will be Fs potential energy = work done = Vq q is constant. and V is decreasing from left to right cox the direction of field is from left to right. so ans will be A. hope you got it
  4. U

    Physics MCQs thread.

    but the ans says elastic n plastic
  5. U

    Physics MCQs thread.

    sorry sorry. mistake. fro spring Q, extention is 1. n w.d = (1/2)*k*x^2 for P, (1/2)*2k*(1/2)^2 for Q, (1/2)*k*(1)^2
  6. U

    Physics MCQs thread.

    i also need xplanation of dis ques :(
  7. U

    Physics MCQs thread.

    the new wave will be drawn to the left of the original wave
  8. U

    Physics MCQs thread.

    W.D = (1/2)*k*x when force is constant, k is indiectly proportional to extension for spring P, extention will be 1/2 for spring Q, extention will be 2 so w.d for P is (1/2)*2k*(1/2) n w.d for Q is (1/2)*k*2 SO WP=0.5 of WQ
  9. U

    Physics MCQs thread.

    ok. the wave will be like this when it moves forward. to find the up or down movement of the wave particles,we have to make a new wave like this. sorry 4 replyin in urdu.
  10. U

    Physics MCQs thread.

    but why did u draw it that way / cox jb wave aagay move karegi to esi hi banegi. wave k particles ki up ya down movement dekhne k liye new wave bana kar dekhte hain
  11. U

    Physics MCQs thread.

    its very funny but i hope u understand it
  12. U

    Physics MCQs thread.

    can you pls show it on paint? yar mjhse achi wave nae ban rahi. ajib se ban rahi hai. lemme try again :( lol, i don't speak urdu/hindi! please do, and thanks alot!
  13. U

    Physics MCQs thread.

    make a second wave to the right of the original wave. u will see that A is moving down while C is moving upwards I tried that, but I still don't get it! :/ can you pls show it on paint? yar mjhse achi wave nae ban rahi. ajib se ban rahi hai. lemme try again :(
  14. U

    Physics MCQs thread.

    parallel combination main voltage divide nae hota. so V2=V3. V is divided into V1 and V2 OR V1 and V3 V = V1 + V3 OR V = V1 + V2
  15. U

    Physics MCQs thread.

    make a second wave to the right of the original wave. u will see that A is moving down while C is moving upwards
  16. U

    Physics MCQs thread.

    % contraction is contraction/original lenght*100 = strain*100 fine the area by pie*(d/2)^2 tention/area=stress stress/young modulus = strain strain*100=ans
  17. U

    Physics MCQs thread.

    wavelenght=speed/frequency second resonance occurs at 3/4 of wavelenght ull get the answer. change the answer from metres to cm
  18. U

    Physics MCQs thread.

    me ka b D cuming
  19. U

    Physics MCQs thread.

    total maxima = 2*highest maxima +1 highest maxima = line spacing/wavelenght line spacing = 1/300*10^3 wavelenght = 450nm
  20. U

    Physics MCQs thread.

    direction of electric field is frm more +ve to less +ve. n the first n last line of field always bulges outward.
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