2020 source guide · Physics

NEET 2020 Physics Semiconductor Electronics Questions

Use this page to connect the official 2020 paper with current Physics practice. NeetVellum does not claim a chapter appeared in that paper until the official question and final key have been mapped.

Practice 120 verified questions →Check official NTA archive ↗

What to master

junction diodes, rectification, logic gates and elementary devices.

Original practice preview

These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.

Example 1 · difficulty 2/5

A hole appears to move through the valence band mainly because

A. positive protons move from atom to atom
B. neighbouring valence electrons successively fill vacant bond states
C. conduction electrons split into positive and negative parts
D. ionised donor atoms drift through the crystal

Example 2 · difficulty 2/5

Under an applied electric field, which statement correctly describes electron and hole drift in a semiconductor?

A. Both drift along the electric field
B. Both drift opposite to the electric field
C. Electrons drift opposite to the field and holes drift along it
D. Electrons drift along the field and holes drift opposite to it

Example 3 · difficulty 2/5

Why do electron current and hole current add rather than cancel in a semiconductor?

A. Electrons and holes always drift in the same direction
B. Electrons have no charge while holes are positive
C. Only holes respond to an electric field
D. Their charges and drift directions are both opposite, giving current in the same conventional direction

The evidence-first practice loop

1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
2. Attempt closed-bookExpose the concept or execution gap before rereading.
3. Repair and returnClassify the miss and re-practice after a delay.

Canonical chapter practice

Semiconductor Electronics →

Frequently asked questions

Are these official NEET 2020 Physics Semiconductor Electronics PYQs?

No. The previews are original NeetVellum practice questions. A historical item receives a PYQ label only after its official paper and authoritative final answer key are attached. Use the official archive for the source paper.

How should I use the NEET 2020 paper?

Solve the official paper under its original timing, verify against the final key, classify every miss, and then use the linked current-syllabus practice bank to repair the exposed concept.