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  1. umarashraf

    AS Physics P1 MCQs Preparation Thread.

    was it a joke..?? or you have variant papers of 2002..???
  2. umarashraf

    AS Physics P1 MCQs Preparation Thread.

    that ie even easier one.. if the answer is A.. is it..?? i dont have the marking sc...
  3. umarashraf

    AS Physics P1 MCQs Preparation Thread.

    urdu mein baat kartay hien.. tum kia waqai q37 w09 varient 2 ki baat kar rai ho naw..???
  4. umarashraf

    AS Physics P1 MCQs Preparation Thread.

    what what what...??? 37../??? isotopes have same number of protons mate... so D is the answer... whats so special with this one..???
  5. umarashraf

    AS Physics P1 MCQs Preparation Thread.

    20.. was so simple yaar... find area under the curve.. ok.. draw a straight line from 0,0 to P... and use 0.5* base * height.. this wil give u 0.1 as answer.. now it is clear that the area you have found is less than the original one but double to it.. so option just little greater than 0.1 isC...
  6. umarashraf

    AS Physics P1 MCQs Preparation Thread.

    13... projectile was made in with 45 degrees.. so initially, E was because of both vertical and horizontal components... when it will reach its top position, no vertical vel. will be there.. so E will be half.... sice sin45 and cos45 are equal to each other..
  7. umarashraf

    AS Physics P1 MCQs Preparation Thread.

    12 first... since applied force is constant, the torque (F*d) will be proportional to d.... torque for 100mm is 3.. so for 150mm , it will be 4.5Nm... so we have to look for the tensions now..torque is the product of force and moment arm.. and the only force present here is the tension in the...
  8. umarashraf

    As physics p1 MCQS YEARLY ONLY.

    question no.???
  9. umarashraf

    AS Physics P1 MCQs Preparation Thread.

    really..?? mate alpha particles are like helium nucleus only.. they have no electrons like helium ATOM.. so Atom word is strictly wrong to refer with alpha particles...
  10. umarashraf

    AS Physics P1 MCQs Preparation Thread.

    x = distance between slits... D= distance between source of vibration and plave where the wave pattern is observed... d= distance between difracting grating...
  11. umarashraf

    there..???

    there..???
  12. umarashraf

    AS Physics P1 MCQs Preparation Thread.

    consider the motion from X to Y... s=ut_1/2at^2... 40=12u+72a----->eq.1 and we know that acceleration is constant. so we now need to find the velocity at Y... this will be equal to at+u=v 12t+u = volicity at Y... now consider the motion from Y to Z... 40=ut+1/2at^2.. u here will be velocity at...
  13. umarashraf

    AS Physics P1 MCQs Preparation Thread.

    the new pattern is produced by increasing the distance between the plates... this distance is given by the formula (call this distance be a:) a=xD/lemda*d... hope you remember this... increasing frequency will dec wavelength... dec in wavelength will increase a:....
  14. umarashraf

    AS Physics P1 MCQs Preparation Thread.

    pressure is force over area... force is ma .. so (kgms^-2/m^2) * m^3(volume) this will give you kgm^2s^-2... which is the base unit of energy..
  15. umarashraf

    AS Physics P1 MCQs Preparation Thread.

    mas of liquid= 70-20= 50.. here two uncertainties are involved.. one from 70 and one one from 20... now Density is eq. to mass over vol. 5 * (0.6/10 + 2/50) = 0.5 ans
  16. umarashraf

    AS Physics P1 MCQs Preparation Thread.

    initial momentum of the ball is 2mv before collision... if collision was perfectly elastic one, all the momentum would have been gained by the ball... and this would have made the change in the momentum equal to 4mv.. 2mv-(-2mv)... now it is given that collision is inelastic, it wil losse some...
  17. umarashraf

    AS Physics P1 MCQs Preparation Thread.

    initial momentum of the ball is 2mv before collision... if collision was perfectly elastic one, all the momentum would have been gained by the ball... and this would have made the change in the momentum equal to 4mv.. 2mv-(-2mv)... now it is given that collision is inelastic, it wil losse some...
  18. umarashraf

    AS Physics P1 MCQs Preparation Thread.

    Best of luck for the paper to you all:)
  19. umarashraf

    Post your LUMS admission decisions here.

    haha... Good....:) Best of luck:P
  20. umarashraf

    nae nae:P:P:P

    nae nae:P:P:P
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