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Physics - Semiconductors Question with Solution | TestHub

PhysicsSemiconductorsMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

The electrical conductivity of a semiconductor increases when electromagnetic radiation having a wavelength shorter than $2480 nm$ is incident on it. The bandgap (in $eV$ ) for the semiconductor is

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Answer:

Solution:

$λ_{min} = 2480 nm = 24800 \overset{o}{A}$
Energy (in $eV$ ) $= \frac{12375}{λ}$
$E = \frac{12375}{24800} eV \Rightarrow E = 0.5 eV$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:SemiconductorsSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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