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  1. H

    A2 Physics | Post your doubts here

    calculate current in 6 kiloohm resistor
  2. H

    A2 Physics | Post your doubts here

    ready!!!! ask any problem
  3. H

    A2 Physics | Post your doubts here

    explain why it is necessary to make repeated amplifications of signal...... signal loose energy as it travels....so must be amplified in order to prevent the signal from being lost in the noise..... In order that a signal may be detected adequately, its power must be a minimum number of times...
  4. H

    A2 Physics | Post your doubts here

    well guyx tell the last tipss.....share the new things u learnt while solving past papers....
  5. H

    A2 Physics | Post your doubts here

    for a parallel beam incident on a material linear absorption coefficient is the value of mu in the expression Io *e^-ux
  6. H

    A2 Physics | Post your doubts here

    well redspot mentions the graph that ZISHI posted
  7. H

    A2 Physics | Post your doubts here

    well @user....why graphs for thos diodes are 2wards the same side
  8. H

    A2 Physics | Post your doubts here

    noooo they are correct ....m asking for the relay cnfusion
  9. H

    A2 Physics | Post your doubts here

    anyyy 11??????
  10. H

    A2 Physics | Post your doubts here

    finally got it.....half wave rectification curves!!!
  11. H

    A2 Physics | Post your doubts here

    dint understand....k top of relay coil became positive.....now what happens next......and by the way current shud be damging not an emf....what do u say.....what i am saying is cant it just go into earth if top becomes positive...a..and why after all it will try to damage op-amp as upper end is...
  12. H

    A2 Physics | Post your doubts here

    ohh k
  13. H

    A2 Physics | Post your doubts here

    hmmmm whats the problem in ms?
  14. H

    A2 Physics | Post your doubts here

    well if i have to do graph of p.d across diode hw will it look like
  15. H

    A2 Physics | Post your doubts here

    i have not got the paper........cn u post pic here.....and by the way i want to discuss rectification graphs
  16. H

    A2 Physics | Post your doubts here

    WELL I DONT UNDERSTAND THE PURPOSE OF DIODE 2......EVEN IF THERE IS A BACK EMF CAN DIODE D1 PROTECT OPAMP cos it will be in reverse biased
  17. H

    A2 Physics | Post your doubts here

    oooooohhhhhhh man u have to SUGGGEST!!!
  18. H

    A2 Physics | Post your doubts here

    brother i want ot discuss wid u diodes graph.......i am not crystal clear abt them
  19. H

    A2 Physics | Post your doubts here

    bt cnt it be like that they have different k.e
  20. H

    A2 Physics | Post your doubts here

    cos the half life is like a million years........so in 2 days nothing will happen to activity.......cso it llll take such a long time to halve
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