Target Exam

CUET

Subject

Physics

Chapter

Semiconductors and Electronic Devices

Question:

Which of the following is NOT true ?

Options:

When atoms come closer to each to form solids, their energy orbits overlap to form bands.

The energy bands are continuous throughout the lattice of the solid.

Polythiophene is a semiconductor.

None of the above.

Correct Answer:

The energy bands are continuous throughout the lattice of the solid.

Explanation:

There is gap between the energy bands, known as the forbidden gap. So, the energy bands are not continuous.