With increase in temperature the electrical conductivity of intrinsic semi conductor___________________?

Related Mcqs:

1. If electrical conductivity increases with the increase of temperature of a substance, then it is a:

   A. Semiconductor
   B. Conductor
   C. Insulator
   D. None of the above

   Submitted by: Naveed Tahir

2. Many of the semi conductors are crystals of the type__________________?

   A. Face centred cubic
   B. Body centred cubic
   C. Simple cubic
   D. All of the above

3. Semi-conductor germanium and silicon are_________________?

   A. pentavalent
   B. trivalent
   C. divalent
   D. tetravalent

4. Semi-conductors with donor atoms and free electrons belong to the type________________?

   A. n
   B. p
   C. mix
   D. any of above

5. Forward current through a semi conductor diode circuit is due to____________?

   A. minority carriers
   B. majority carriers
   C. holes
   D. electron

6. The specially designed semi-conductor diodes used as fast counters in electronic circuits are______________?

   A. The light emitting diodes
   B. Photo diodes
   C. Photo voltaic cell
   D. Solar cells.

7. To obtain a p-type semi-conductor Si Crystal must be doped with foreign atoms whose valency is_____________?

   A. 2
   B. 3
   C. 4
   D. 5

8. The specially designed semi-conductor diodes used as fast counters in electronic circuits are_______________?

   A. The light emitting diodes
   B. Photo diodes
   C. Photo voltaic cell
   D. Solar cells.

9. What is unit of conductivity?

   A. Ohm
   B. Watt
   C. mho
   D. None of these

   Submitted by: Asif Ali

10. Increase in velocity of sound in the air for 1°C rise in temperature is_________________?

    A. 1.61 ms-1
    B. 61.0 ms-1
    C. 0.61 ms-1
    D. 2.00 ms-1