A PN- junction has a thickness of the order of

  • Option 1)

    1\, \, \, cm

  • Option 2)

    1\, \, \, mm

  • Option 3)

    10^{-6}\, \, \, m

  • Option 4)

    10^{-12}\, \, \, cm

 

Answers (2)

As we learnt in

P-N junction -

When p type semiconductor is mixed with N - type semiconductor, P-N junction formed

 

- wherein

There is very thin region (of the order of micro meter) called depution region.

 

 The thickness of PN junction i.e. the depletion region is of the order of 1\mu m \: or 10^{-6}m


Option 1)

1\, \, \, cm

Incorrect

Option 2)

1\, \, \, mm

Incorrect

Option 3)

10^{-6}\, \, \, m

Correct

Option 4)

10^{-12}\, \, \, cm

Incorrect

1cm

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