Solid State Tes...

Which of the following shows correct range of conductivity?
(i) Conductors: 10⁴ to 10⁷ ohm⁻¹ m⁻¹
(ii) Insulators: 10⁻⁶ to 10⁴ ohm⁻¹ m^-1 
(iii) Semiconductors: : 10⁻¹⁰ to 10⁻⁶ ohm⁻¹ m⁻¹

Pure silicon and germanium behave as

Three type of bands are shown in the figures given below showing the position of the valence band and conduction band. The figures A,B and C represent

The conductivity of intrinsic semiconductors can be increased by adding a suitable impurity. This process is called (P). This can be done with an impurity which is (Q) rich or deficient as compared to the semiconductor. Such impurities introduce (R) defects in them. Electron rich impurities result in (S) type semiconductors while electron deficit impurities result in (T) type semiconductors.

To get n-type of semiconductor, germanium should be doped with

p−type semiconductors are formed when Si or Ge are doped with:

Which type of semiconductor is formed when grmanium is doped in the gallium as indicated in the figure?

Which of the following statements is true about semiconductors?

Observe the given figure carefully and fill in the blanks by choosing the correct option.

Match the column I with column II and mark the appropriate choice.