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MO     CAPE      CAPE 2018 U2        How the SO can be clarified?      Status in
                 DU      2018        SO which                                           final syllabus
                 LE      SO #       needs to be
                  #                more clearly
                                       stated
                                 of conductors in  Eg
                                 order to place     Conductor:  n = 10  m   -3
                                                                       29
                                 the values in      Intrinsic semiconductor: n = 10
                                                                                    3
                                 meaningful         m -3
                                 contexts.          Doped [extrinsic]
                                                                           19
                                                                               -3
                                                    Semiconductor: n = 10  m

                                                    Compare the electrical property
                                                    of Resistivity of intrinsic
                                                    semiconductors, doped
                                                    [extrinsic]  semiconductors,
                                                    conductors and insulators
                                                    Eg. At 300K:
                                                    Insulator:  > 10 Ω m
                                                                     7
                                                                       -6
                                                    Conductor:   < 10  Ω m
                                                                                  -6
                                                    Semiconductor:  between 10
                                                           7
                                                    and 10 Ω m
                  2      4.10    use expressions    SUGGESTED PRACTICAL                 Not Changed
                                 for the gain of    ACTIVITIES                          to suggested
                                 both the           To plot the transfer
                                 inverting          characteristic of an op. amp.
                                 amplifier and      connected as an inverting
                                 the non-           amplifier and measure its gain.
                                 inverting          See page 87 for suggested
                                 amplifier;         practical activity.
                                  plot the
                                 transfer
                                 characteristic
                                 (Vo against Vi)
                                 of an op. amp
                                 and measure its
                                 gain.

                  3       1.2    use the            use the relationship E = h f  or E =  Not Changed
                                 relationship E =   hc/ to solve problems;            to suggested
                                 h f to solve
                                 problems;
                  3       1.5    define:            define:                             Not Changed
                                                                                        to suggested
                                  (a) work           (a) work function (Φ);
                                 function (Φ);       (b) threshold frequency (fo);
                                  (b) threshold      (c) cut-off wavelength (λo); and,
                                 frequency (fo);     (d) stopping potential (Vs);
                                  (c) cut-off
                                                     use the relationship


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