Modern Physics is one of the highest scoring and most predictable units in NEET. Every year, 3–4 direct questions are asked, and most of them are based on standard concepts like photoelectric effect, atomic models, nuclear physics, and semiconductors. If you revise Physics Modern Physics PYQs properly, you can secure easy marks with minimal time.
This article compiles the most important Physics Modern Physics PYQs, along with concept-focused explanations and quick revision notes designed for NEET.
Why Physics Modern Physics PYQs Are Important
The biggest advantage of preparing Modern Physics is repetition. NEET repeatedly asks:
- Photoelectric effect concepts
- Bohr’s atomic model
- Radioactivity and nuclear reactions
- Energy levels and spectra
- Semiconductor basics
With proper practice of Physics Modern Physics PYQs, you can solve most questions within seconds in the exam.
Quick Notes: Modern Physics (Last Minute Revision)
Before attempting Modern Physics PYQs, revise these key ideas:
- Photoelectric effect depends on frequency, not intensity
- Threshold frequency is the minimum frequency required for emission
- Increasing intensity increases number of electrons, not energy
- Bohr model explains hydrogen spectrum
- Energy levels are quantized
- Radioactive decay is random and independent of external conditions
- Half-life is constant for a given substance
- Semiconductors conduct better than insulators but less than conductors
These concepts are repeatedly tested in Modern Physics PYQs.
Top 10 Physics Modern Physics PYQs (NEET Level)
Question 1
What happens to kinetic energy of photoelectrons when frequency of incident light increases?
Answer:
Kinetic energy increases
Concept: Direct application of photoelectric effect — one of the most common Physics Modern Physics PYQs
Question 2
What happens when intensity of light increases in photoelectric effect?
Answer:
Number of electrons increases, but kinetic energy remains unchanged
Question 3
Define threshold frequency
Answer:
Minimum frequency required to eject electrons from a metal surface
Question 4
Which model explains hydrogen spectrum?
Answer:
Bohr’s model
Question 5
What happens to radius of orbit as energy level increases?
Answer:
Radius increases
Question 6
What is half-life?
Answer:
Time taken for half of the radioactive substance to decay
Question 7
Radioactive decay depends on which factors?
Answer:
It does not depend on temperature, pressure, or chemical state
This is a very common conceptual question in Physics Modern Physics PYQs.
Question 8
Which particle is emitted in beta decay?
Answer:
Electron
Question 9
What is the charge of neutron?
Answer:
Zero
Question 10
Which semiconductor is formed by adding pentavalent impurity?
Answer:
n-type semiconductor
Additional Practice Questions (High-Yield)
To strengthen your grip on Physics Modern Physics PYQs, solve these:
- What is work function?
Answer: Minimum energy required to remove an electron - What happens when frequency is below threshold?
Answer: No emission occurs - Energy of photon depends on?
Answer: Frequency - What is binding energy?
Answer: Energy required to separate nucleus into nucleons - Which radiation has highest penetration power?
Answer: Gamma rays - Which radiation is most ionizing?
Answer: Alpha particles - What is nuclear fission?
Answer: Splitting of heavy nucleus - What is nuclear fusion?
Answer: Combining of light nuclei - Silicon is what type of semiconductor?
Answer: Intrinsic semiconductor - What happens to conductivity with temperature in semiconductors?
Answer: Increases
These are directly based on patterns seen in Physics Modern Physics PYQs.
Common Mistakes in Physics Modern Physics PYQs
Students often make mistakes like:
- Confusing intensity and frequency in photoelectric effect
- Forgetting basic definitions (work function, half-life)
- Mixing up alpha, beta, and gamma properties
- Not understanding semiconductor types
- Ignoring conceptual clarity
Avoiding these errors will significantly improve your performance in Physics Modern Physics PYQs.
Final Strategy to Master Physics Modern Physics PYQs
To score maximum marks in Physics Modern Physics PYQs, follow this:
- Revise NCERT line by line
- Practice PYQs multiple times
- Focus on conceptual clarity
- Avoid over-dependence on formulas
- Strengthen definitions and basic theory
Modern Physics is one of the easiest sections if prepared correctly. Most Physics Modern Physics PYQs are direct and require clear understanding rather than complex calculations.
FAQs on Physics Modern Physics PYQs
1. How many questions come from Modern Physics in NEET?
Usually 3–4 questions are asked every year.
2. Are Physics Modern Physics PYQs repeated?
Yes, many questions are repeated with slight variations.
3. Which topic is most important?
Photoelectric effect and nuclear physics are most important.
4. Is Modern Physics easy for NEET?
Yes, it is one of the most scoring sections.
5. How to revise Physics Modern Physics PYQs quickly?
Focus on concepts, definitions, and PYQs instead of lengthy derivations.