2017 source guide · Physics

NEET 2017 Physics Semiconductor Electronics Questions

Use this page to connect the official 2017 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

For a p-n junction diode biased in reverse (well below the breakdown voltage), increasing the magnitude of the reverse bias causes the width of the depletion region to:

A. increase, because majority carriers on both sides are pulled away from the junction
B. decrease, because minority carriers neutralise the exposed immobile ions
C. remain unchanged, since the dopant concentration is fixed
D. first increase and then decrease, owing to enhanced diffusion of carriers

Example 2 · difficulty 3/5

An LED made from a direct band-gap compound emits light of wavelength 620 nm. Using hc = 1240 eV nm, the band gap of its active material is approximately:

A. 0.50 eV
B. 2.00 eV
C. 1.24 eV
D. 3.10 eV

Example 3 · difficulty 4/5

An unregulated 15 V DC source is connected in series with a 200 Ω resistor to a parallel combination of a Zener diode (breakdown voltage 10 V) and a load resistor of 500 Ω. Operating in the breakdown region, the current through the Zener diode is:

A. 5 mA
B. 20 mA
C. 25 mA
D. 75 mA

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 2017 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 2017 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.