Physics · Semiconductors, semiconductor diode: I-V characteristics in forward and reverse bias, diode as a rectifier
Assertion In some solids, the valence band is completely filled while the next h
Assertion In some solids, the valence band is completely filled while the next higher band separated by an energy gap of few electrons-volts is completely empty. Reason In insulators the energy band completely filled with electrons( the valence band) and above it is empty band (the conduction band)
- A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
- B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
- C. Assertion is correct but Reason is incorrect
- D. Both Assertion and Reason are incorrect
Step-by-step solution
The assertion correctly describes the band structure of insulators: a filled valence band and an empty conduction band separated by a band gap of a few eV. The reason correctly identifies that insulators have a completely filled valence band and an empty conduction band above it. Since the assertion is essentially describing an insulator, the reason provides the correct classification and thus explains the assertion.