In germanium crystal, the. forbidden energy gap in joule is :

Question

In germanium crystal, the. forbidden energy gap in joule is : (A) zero (B)  1.6× 10-19  (C)  1.1× 10-19  (D)  1.76× 10-19

Tardigrade Admin · Accepted Answer

Semiconductors are similar to insulators but the conduction and valence bands are spaced closely,
so that at room temperature a number of electrons are found in conduction band.
For germanium, forbidden energy gap

= 0.67 e V

= 6.7 \times 1.6 \times 1 0^{- 19} J

= 1.072 \times 1 0^{- 19} J

= 1.1 \times 1 0^{- 19} J

Q. In germanium crystal, the. forbidden energy gap in joule is :

zero

$1.6 \times 10^{- 19}$

$1.1 \times 10^{- 19}$

$1.76 \times 10^{- 19}$

Q. In germanium crystal, the. forbidden energy gap in joule is :

zero

1.6×10−19

1.1×10−19

1.76×10−19

Semiconductors are similar to insulators but the conduction and valence bands are spaced closely, so that at room temperature a number of electrons are found in conduction band. For germanium, forbidden energy gap =0.67eV =6.7×1.6×10−19J =1.072×10−19J =1.1×10−19J

$1.6 \times 10^{- 19}$

$1.1 \times 10^{- 19}$

$1.76 \times 10^{- 19}$