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CBSE Notes 2011-2012 » XII-Physics

Electronic Devices

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]

Give the ratio'of the number of holes and number of conduction electrons in an intrinsic semiconduct...

Short answer question

Give the ratio'of the number of holes and number
of conduction electrons in an intrinsic semiconductor.
[Foreign 2003]

Is the ratio of number of holes and number of conduction electrons in a /'-type semiconductor more t...

Short answer question

Is the ratio of number of holes and number of
conduction electrons in a /'-type semiconductor
more than, less than or equal to 1 ?
[Foreign 2003]

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