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  1. Y

    Physics MCQs thread.

  2. Y

    Physics MCQs thread.

    but mark sheme says D IE 14
  3. Y

    Physics MCQs thread.

    total momentun before=after m1v1 = m2v2 2(2) = 1(v2) v2 = 4 m/s KE = (.5x2x2^2) + (.5x1x4^2) = 4 + 8 = 12J
  4. Y

    Physics MCQs thread.

    total momentun before=after m1v1 = m2v2 2(2) = 1(v2) v2 = 4 m/s KE = (.5x2x2^2) + (.5x1x4^2) = 4 + 8 = 12J
  5. Y

    Physics MCQs thread.

    dsin45=3lamda eqn 1 d sin 90=n*lamda eqn 2 solve it 2 get n 90 iz used becauz max order is seen on 90degree
  6. Y

    Physics MCQs thread.

    post ur q. here
  7. Y

    Physics MCQs thread.

    hey cant u solve??
  8. Y

    Physics MCQs thread.

    hey gexceln can u xplain my q. of about tubes in page94
  9. Y

    Physics MCQs thread.

    for constant velocity a=0 so f=w-d-u(d is drag force u is upthrust w is weight f is net force) 0=w-d-u w=d+u so w>u option D have u understand if u know ans of my q. of two tubes plz , help me..
  10. Y

    Physics MCQs thread.

    can u give ans of my q.??
  11. Y

    Physics MCQs thread.

    use v=f*lamda to find f so then find max v from given relation and use max ke =0.5*m*(maxv)^2
  12. Y

    Physics MCQs thread.

    any one??
  13. Y

    Physics MCQs thread.

    for uniform object its geometric centre is in its c.g so weight acts from 1.25m away from pivot so taking moment about the pivot w*1.25=300*2 so w=480 its B
  14. Y

    Physics MCQs thread.

    for q.27 in up u should mugup the wavelength of electomagnetic waves for 14in down total work=gain in pe +work by friction so u will get D
  15. Y

    Physics MCQs thread.

    ok fromnext time i will give will u xplain this 2 me????
  16. Y

    Physics MCQs thread.

    my last question to u all...
  17. Y

    Physics MCQs thread.

    this also unanswered????? any one??
  18. Y

    Physics MCQs thread.

    hey zishi can u xplain this?????or any one??
  19. Y

    Physics MCQs thread.

    this isnt answered any one????
  20. Y

    Physics MCQs thread.

    is it da way 2 solve??dear xtegreat
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