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  1. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Well, in Chapter 15, go to topic "Applications of Converging Lenses", the syllabus point is covered in that topic.
  2. Saad Mughal

    Maths, Addmaths and Statistics: Post your doubts here!

    Order of the Matrix
  3. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Yes but for that you can do two things, either heat the wire then connect it to the circuit or you could just heat the wire while it is connected to the circuit.
  4. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    http://www.mediafire.com/view/?m858jdq4alljmpv
  5. Saad Mughal

    Maths, Addmaths and Statistics: Post your doubts here!

    I'm not so good with Relative Velocity so I can't help you much. However, Interception is the crossing of paths of two objects (e.g ships). Relative apparent path is the path that appears to be taken by something as seen by an observer.
  6. Saad Mughal

    Maths, Addmaths and Statistics: Post your doubts here!

    Independant.
  7. Saad Mughal

    Maths, Addmaths and Statistics: Post your doubts here!

    Annuity.
  8. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    (i) V=IR V= (0.2)(10) V= 2 V. (ii) Current in series is the same throughout, Therefore, the 0.3 A current is divided into the two parallel resistors, Hence, I + 0.2 = 0.3 I = 0.1 A.
  9. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Do you have the book "A complete course for O'level" by Charles Chew?
  10. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    You're correct Usama, this sort of question came in one of the ATP's before too (I did it in class). Equipment: Thermometer, Thermistor, Oil Bath/Water Bath, Stirrer, Heater. The thermistor is immersed into the water bath and a thermometer is placed within the water bath (close to the...
  11. Saad Mughal

    Yeah wait. I'll message you.

    Yeah wait. I'll message you.
  12. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    Hehe. No problem. :)
  13. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    You don't have to make bizarre lines or curves for fitting all the points in the graph. A best fit line means that a straight line with no rugged joints, just a clear smooth straight line. A best fit curve means that a proper curve that shapes correctly. No weird joints made, for example (a...
  14. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    We're asked for an experiment for total internal reflection, I don't quite get how what you say will prove that total internal reflection occurs.
  15. Saad Mughal

    O-level Notes Center

    It's the same as the one above. These are the notes found in the IGCSE forum. https://www.xtremepapers.com/community/threads/useful-stuff-compiled.10273/
  16. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    C3H7OH + C2H5COOH ----> C2H5COOC3H7 + H2O. The general reaction b/w alcohols and carboxylic acids, Alcohol + Carboxylic Acid ----> Ester + Water.
  17. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    I'm not 100% sure about this experiment but, Equipment: Ray box or Light source, Prism or Semi Circular Glass Block. -The ray box is placed at an angle to the semi circular glass box, and rays are projected, the light ray is refracted through the glass block. -The angle of incidence is gradually...
  18. Saad Mughal

    Biology; Chemistry; Physics: Post your doubts here!

    (b), propanal (C3H7OH) and propanoic acid (C2H5COOH) will form this ester, propyl propanoate.
  19. Saad Mughal

    O-level Notes Center

    Sorry, I don't know too much about where to find the IGCSE notes, I just gave you the link of the most general notes.
  20. Saad Mughal

    O-level Notes Center

    https://www.xtremepapers.com/community/threads/useful-stuff-compiled.10273/
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