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  1. M

    Physics MCQs thread.

    blah can't believe I fell asleep...Owell, can't take back time now. Good luck everyone and thankyou to all those who have helped.
  2. M

    Physics MCQs thread.

    thankyou, it makes sense now since i did this other question that also said the direction should be parallel to the direction of force..so yeah. thankq Can you please try solving + explaining this other as well = A moving body undergoes uniform acceleration while travelling in a straight line...
  3. M

    Physics MCQs thread.

    08 may/june Q16.... We really need some intelligent person here lol
  4. M

    Physics MCQs thread.

    the answer is A can someone explain why..
  5. M

    Physics MCQs thread.

    you don't need the frequency all you need is to find the distance light travels in one second which is 3 x 10^8 as speed is d/t and when t=1 d = 3x10^8. now that you have the lenght you have to press it as number of wavelenghts, to find how many wavelenghts are needed to cover this distance we...
  6. M

    Physics MCQs thread.

    try doing it again this time keep in mind u have to take the perpendicular distance, i recommend that you extend each force line first and then see which is the perpendicular distance. also 10N force will cause anticlockwise motion because of the shape of the figure.
  7. M

    Physics MCQs thread.

    5N force will cause a momentum that is over a distance 402 - 2 and 5x2 = 10. where has the 10nm will also cause anticlockwise wise rotation which will be over a distance of 2m so 2 x 10 = 20 , thus the total anti clockwise = 10 + 20 = 30 and anti clockwise will be over a distance 3 and its 20 n...
  8. M

    Physics MCQs thread.

    you must be thinking that it goes up and then comes down, but notice that the x axis says that the height is unceasing so it is only going up. and when going up the potential increases.
  9. M

    Physics MCQs thread.

    its b because the road applies a force upward to counter the weight as well as fiction force which is in the forward direction as the wheels are spinning clockwise. the resultant of these two forces [ which look just like A and D] will be B.
  10. M

    Physics MCQs thread.

    someone please help with this one, I know it has something to do with ut+w/2 at^2 ...but i forgot how to do it..
  11. M

    Physics MCQs thread.

    polarity is simple, it has to be negative because there is a +ive charge on top and since its at equilibrium the +ive charge is attracting it upwards [which only happens if its -ive polarity] where as the weight is pulling it downwards, and the forces are balanced.
  12. M

    Physics MCQs thread.

    its C because if u use RA/l the A is multiplied by 5 and in the other the length is multiplied by 5.
  13. M

    Physics MCQs thread.

    Thankyou both. very well explained, and best of luck for the exam.
  14. M

    Physics MCQs thread.

    ok thanks guys, what about this next one.. I hate electricity questions..
  15. M

    Physics MCQs thread.

    Can someone please explain the easiest way to solve this sortov question. I have no idea how to get to the answer..
  16. M

    Physics MCQs thread.

    Why is upthrust less than magnitude also by, if its at rest shouldn't all forces going up be equal to done, i.e option B
  17. M

    Physics MCQs thread.

    viewtopic.php?f=26&t=9216#p101386 I don't understand how u=at in the second one..
  18. M

    Chemistry MCQ thread...

    I thought the C=C would get -OH attached like oxidation of alkenes, but guess not...Thanks. Best of luck for your exams. At least I know which thread to look at when I'm retaking the exam ...=/
  19. M

    Chemistry MCQ thread...

  20. M

    Chemistry MCQ thread...

    OK I get the solubility one now and I understand that it can react molecules of HBr, but won't it also react with D, the oxidizing agent?
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