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  1. Thought blocker

    Physics: Post your doubts here!

    :P haha.. :P
  2. Thought blocker

    Physics: Post your doubts here!

    Use the concept of speed of approach = speed of separation I explained it yesterday, if you don't understand go few pages back and get your answer :)
  3. Thought blocker

    Physics: Post your doubts here!

    Will just go pee... and come back :P
  4. Thought blocker

    Who Kicked The Cat?

    You are just :thumbsup:
  5. Thought blocker

    Physics: Post your doubts here!

    I did the same way! :P Last me answer dusra likh lia :P
  6. Thought blocker

    As physics p1 MCQS YEARLY ONLY.

    oh sorry. 27) imagine that you are the one who the electric field comes from..the direction of the field will be from you to the computer..and then the electron passes from your left arm to your right through the field..so because you are the source of the field you r +vely charged so you will...
  7. Thought blocker

    As physics p1 MCQS YEARLY ONLY.

    POSTED IT THOUSAND TIMES :P 27) Let the distance between the double slit and the screen be 1m initially. When the distance is increased BY 2m the NEW distance is 3m. Using the formula: Wavelength= (fringe seperation x distance between the double slits)/ distance between the screen and the slits...
  8. Thought blocker

    Physics: Post your doubts here!

    haha :thumbsup:
  9. Thought blocker

    <------------------------- Agreed!

    <------------------------- Agreed!
  10. Thought blocker

    Physics: Post your doubts here!

    "there are two vectors, P and P' where P is initial momentum and P' is final momentum. P=mv P'=-mv change in momentum is P'-P which is same as P + (-P) just add them like this. -mv + (-mv) = -2mv" Haris Bin Zahid This answer is for you from Suchal.. He is unable to post here.. :(
  11. Thought blocker

    As physics p1 MCQS YEARLY ONLY.

    27) look, for you to determine the polarity you just see,weight of body should act downwards therefore electric field should act upwards body should be attracted upwards(towards positive pole)means it is negatively charged .now since body is kept at rest..electric force=weight electric force =...
  12. Thought blocker

    Physics: Post your doubts here!

    find d which is 1/n -->1/500 * 10^ (-3) = 2 x 10^-6. then d sin90=n x (600 x 10^-9) = 3 then he asked for the images so it is 3 orders for one side which is 45 degrees so for the 90 degrees it is 3 x 2= 6 + the normal ray = 7 so D
  13. Thought blocker

    hmm.. nothing..

    hmm.. nothing..
  14. Thought blocker

    As physics p1 MCQS YEARLY ONLY.

    Now post new Doubts :)
  15. Thought blocker

    As physics p1 MCQS YEARLY ONLY.

    d*sin(tetha)=n*lamda tetha will be 60/2 as it is suppose to be the angle made by the normal to the granting 1.15 * 10^-6 sin 30 = 1 * λ λ = 575 nm
  16. Thought blocker

    Sup ? :)

    Sup ? :)
  17. Thought blocker

    Thanks Shadil :)

    Thanks Shadil :)
  18. Thought blocker

    Physics: Post your doubts here!

    Any doubts left ?
  19. Thought blocker

    Physics: Post your doubts here!

    10) look ... this question deals with relative speeds rather than just momentum.... in a perfectly elastic collision, the relative speed of approach is equal to the relative speed of separation.. but what is meant by relative speed of the 2 objects.... imagine u are moving in a car at a speed of...
  20. Thought blocker

    Physics: Post your doubts here!

    w12_12 30) Apply d*sin thetha = n*lamida d = 1/n where n is no. of line/m. Metre not millimetre. Grating's got 300lines/mm. So this means it has 300*1000 lines/m (Coz 1m = 1000mm) d = 1/n ie 1/300,000 U wanna see all the maximas possible, so to get max. no. of maximas on one half of the screen...
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