Which of the following is true regarding the band-gap energy of a semiconductor ?
(A) Minimum energy required to break a covalent bond
(B) On breaking of the bond, electron is generated
(C) On breaking of the bond, electron-hole pair is generated
(D) A & C both are true
(A) Minimum energy required to break a covalent bond
(B) On breaking of the bond, electron is generated
(C) On breaking of the bond, electron-hole pair is generated
(D) A & C both are true