NEET UG PHYSICS MCQ: SEMI CONDUCTOR DEVICES

1 Easy

1 of 1

Application +4 | -1

The electrical conductivity of a semiconductor increases when electromagnetic radiation of wavelength shorter than

6200 \, \mathop {\text{A}}\limits^ \circ,

is incident on it. The band gap in (eV) for the semiconductor is

View answer and explanation

Correct option: B

2 is correct because the band gap energy is calculated as

E = \frac{{hc}}{\lambda}

, and substituting the given wavelength yields approximately 2 eV.

More Questions from SEMI CONDUCTOR DEVICES

Practice All Chapter MCQs →

I = A{T^2}{e^{q/{V_L}}}

{V_L}

\sqrt{n}.

n

p - n\;

{10^{17}}\mathrm{c}{\mathrm{m}^{ - 3}}

P

{10^{16}}

\mathrm{c}{\mathrm{m}^{ - 3}}

N

kT =

{n_i} = 1.4 \times {10^{10}}

\mathrm{c}{\mathrm{m}^{ - 3}}