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CBSE Notes 2011-2012 » XII-Physics

Electronic Devices

How does the energy gap of an intrinsic semiconductor vary, when doped with a trivalent impurity ? [...

Short answer question

How does the energy gap of an intrinsic semiconductor
vary, when doped with a trivalent
impurity ? [AI 2002

How does the width of the depletion region of a p-n junction vary, if the reverse bias applied to it...

Short answer question

How does the width of the depletion region of
a p-n junction vary, if the reverse bias applied
to it decreases ? [AI 2002]

How does the width of the depletion region of a p-n junction vary, if the reverse bias applied to it...

Short answer question

How does the width of the depletion region of
a p-n junction vary, if the reverse bias applied
to it increases ? [AI 2002

What is a solar cell ? How does it work ? Give its one use. [AI 2002C]

Short answer question

What is a solar cell ? How does it work ? Give
its one use. [AI 2002C]

How does the d.c. current gain of a transistor change, if the width of the base region is increased ...

Short answer question

How does the d.c. current gain of a transistor
change, if the width of the base region is
increased ? [Delhi 2006C]

Why is the conductivity of n-type semiconductor greater than that of the p-type semiconductor even w...

Short answer question

Why is the conductivity of n-type semiconductor
greater than that of the p-type semiconductor
even when both of these have same
level of doping ? [AI 2005C]

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