Top Repeated JEE Physics Questions and How to Solve Them

Year after year, JEE Physics questions may change in numbers and framing, but the underlying concepts and patterns remain surprisingly consistent. Students who recognise these repeated patterns and learn how to solve them efficiently gain a clear advantage in both JEE Main and JEE Advanced.

Based on analysis of multiple years of JEE question papers and chapter-wise weightage trends, topics such as Mechanics, Electrostatics, Current Electricity, Modern Physics, Optics, and Thermodynamics appear very frequently in JEE Physics.

At Deeksha Vedantu, we train students not just to memorise formulas, but to identify recurring question models and apply a structured, step-by-step problem-solving method.

Data-Backed View: Most Repeated JEE Physics Topics

Multiple exam analyses and chapter-wise weightage reports show that the same clusters of chapters dominate JEE Physics almost every year. These include Mechanics, Electromagnetism, Modern Physics, Optics, and Thermodynamics.

High-Weightage / Frequently Asked Topics

These topics consistently show high weightage in JEE Main Physics weightage charts and previous year paper analyses.

Mechanics: Kinematics, Laws of Motion and Work-Energy

Mechanics is one of the most frequently tested areas in JEE Physics. Questions often combine basic laws with real-life situations like blocks on rough surfaces, pulleys, inclined planes, projectiles, and circular motion.

Common Question Patterns

• Displacement–time or velocity–time graph interpretation
• Relative motion in one or two dimensions
• Block and pulley systems with friction
• Work done by variable forces
• Energy conservation in vertical motion or circular tracks

How to Approach Mechanics Questions

1. Identify the system and isolate bodies with free-body diagrams.
2. Mark all forces: weight, normal reaction, tension, friction.
3. Apply Newton’s laws: choose a convenient direction as positive and write equations of motion.
4. For energy questions, compare initial and final total mechanical energy.
5. Use graph properties (slope, area) to extract physical quantities when graphs are involved.

Example Model and Solution Idea

Typical model: A block on a rough horizontal surface is pulled by a force at an angle. The question asks for acceleration or work done.

Solving idea:

• Resolve the pulling force into horizontal and vertical components.
• Modify normal reaction using the vertical component.
• Find friction using f = µN.
• Apply net force = mass × acceleration along the horizontal direction.

This type of setup appears frequently in different forms, so practising a variety of similar problems is very useful.

Current Electricity and Electrostatics

Current Electricity and Electrostatics together account for a significant portion of repeated JEE Physics questions. Many of these are numerical but based on a small, well-defined set of standard formulas.

Common Question Patterns

• Equivalent resistance of complex resistor networks
• Wheatstone bridge and meter bridge balancing conditions
• Conductors and capacitors in series and parallel
• Electric field and potential due to point charges or continuous charge distributions
• Motion of charges in electric fields

How to Approach Circuit Problems

1. Identify series and parallel combinations step-by-step.
2. Simplify the network systematically into an equivalent resistance.
3. For bridge circuits, apply the balance condition (ratio of resistances in one branch equals the ratio in the other branch).
4. Use Ohm’s law (V = IR) and power relations (P = VI, I²R, V²/R).

How to Approach Electrostatics Questions

1. Start by identifying symmetry: many questions become easier using symmetry.
2. Apply Coulomb’s law carefully with correct direction of forces.
3. Use electric field and potential formulas for simple configurations (point charge, ring, infinite line, sheet).
4. For capacitors, remember relations for energy stored and combinations in series/parallel.

Modern Physics and Photoelectric Effect

Modern Physics is one of the most scoring parts of JEE Physics. Question types repeat strongly across years because the underlying formulas are standard and limited.

Common Question Patterns

• Threshold frequency and stopping potential in photoelectric effect
• Energy and wavelength of photons
• De Broglie wavelength calculations
• Radioactive decay and half-life
• Energy levels and transitions in hydrogen-like atoms

How to Solve Photoelectric Effect Questions

1. Write the equation: h f = work function + maximum kinetic energy.
2. Express maximum kinetic energy as e × stopping potential.
3. For threshold frequency, set kinetic energy equal to zero and solve for frequency.
4. For graphs between stopping potential and frequency, use the slope to relate to Planck’s constant.

How to Solve Nuclear and Atomic Questions

1. For decay: use N = N0 × (1/2)^(t/T), where T is half-life.
2. For binding energy: use mass defect and E = Δm c².
3. For energy levels: use En = −13.6 Z²/n² (for hydrogen-like atoms) and find photon energies from level differences.

Optics: Mirrors, Lenses and Interference

Optics is another topic where question models tend to repeat in familiar forms.

Common Question Patterns

• Image formation by concave and convex mirrors
• Lens formula problems with multiple refracting surfaces
• Equivalent focal length of lens combinations
• Young’s double-slit experiment (YDSE) fringe width, shift in fringes
• Interference and diffraction conceptual questions

How to Approach Ray Optics Questions

1. Use the mirror or lens formula consistently: 1/f = 1/v − 1/u (with sign convention).
2. Pay attention to sign conventions: direction of light, object position, and nature of image.
3. For systems of lenses, use image from first lens as object for the next.
4. Draw ray diagrams wherever possible to avoid sign mistakes.

How to Handle Wave Optics Problems

1. For YDSE, use fringe width formula: beta = λD/d, where D is screen distance and d is slit separation.
2. When medium changes, adjust wavelength as λ = λ0/n.
3. Track phase difference and path difference to determine bright or dark fringes.

Thermodynamics and Kinetic Theory

Thermodynamics and Kinetic Theory provide many repetitive question types involving processes like isothermal, adiabatic, isobaric and isochoric changes.

Common Question Patterns

• Work done in various thermodynamic processes
• First law of thermodynamics applications
• Heat transfer and specific heat problems
• Root mean square (rms) speed and kinetic energy of gas molecules

How to Approach Thermodynamics Questions

1. Identify the type of process: constant volume, pressure, temperature, or adiabatic.
2. Use appropriate relations, such as PV = nRT and work done = area under P–V curve.
3. For cyclic processes, compute net work from the enclosed area.
4. Apply the first law of thermodynamics: ΔQ = ΔU + ΔW.

How to Approach Kinetic Theory Problems

1. Use relations for rms, average, and most probable speeds.
2. Remember that temperature is directly proportional to average kinetic energy.
3. Use proportional reasoning to compare speeds at different temperatures.

SHM and Waves

Simple Harmonic Motion (SHM) and Waves are conceptually rich and regularly tested because of their graphical and energy-based nature.

Common Question Patterns

• Time period of oscillations for springs and pendulums
• Energy distribution in SHM
• Phase relationship between displacement, velocity, and acceleration
• Superposition of waves and beats frequency

How to Solve SHM Problems

1. Recognise SHM form: x = A sin(ωt + φ) or x = A cos(ωt + φ).
2. Use relations: v = ω√(A² − x²) and a = −ω²x.
3. For springs: time period T = 2π√(m/k).
4. For pendulums: time period T = 2π√(L/g) for small amplitudes.

How to Practise Repeated JEE Physics Questions Effectively

Simply knowing which topics repeat is not enough; students must practise them in an organised manner.

Step-by-Step Practice Strategy

1. Collect chapter-wise previous year questions and important question sets for Physics.
2. Start with one high-weightage topic (for example, Current Electricity) and solve at least 30–40 past questions.
3. Mark questions that you find tricky or time-consuming.
4. Revisit these marked questions during revision and try to solve them again without hints.
5. Track improvement in speed and accuracy over time.

Recommended Practice Sources

• Official JEE Main and Advanced previous year question papers.
• Chapter-wise PYQ compilations for Physics.
• Simulated mock tests that reflect the latest exam pattern.

These resources ensure exposure to repeated question patterns in a realistic exam-like environment.

How Deeksha Vedantu Helps with Repeated JEE Physics Questions

At Deeksha Vedantu, we structure JEE Physics preparation around repeated concepts and frequently asked patterns so that students build accuracy and confidence.

Key features of our approach:

• Topic-wise practice sheets highlighting repeated models.
• Regular tests focusing on high-weightage Physics chapters.
• Doubt-solving sessions on common PYQ patterns.
• Step-by-step solution techniques demonstrated in live and recorded classes.

This structured training helps students avoid surprises on the exam day.

FAQs – Top Repeated JEE Physics Questions

Q1: Are JEE Physics questions really repeated every year?

Exact questions are rarely repeated word-for-word, but the underlying concepts and models often follow similar patterns. For example, block-pulley systems, lens combinations, and photoelectric effect setups appear frequently with slight variations.

Q2: Which Physics topic has the highest weightage in JEE?

Mechanics, Current Electricity, Modern Physics, Optics, and Thermodynamics consistently carry high weightage. Focusing deeply on these can significantly improve your score.

Q3: How many previous year questions should I solve for Physics?

A practical target is to solve at least 10–15 years of JEE Physics questions, preferably in chapter-wise format. This gives a strong understanding of recurring ideas.

Q4: How can I improve speed in solving repeated Physics questions?

Regular timed practice, familiarity with standard question models, and maintaining a formula sheet for quick recall all help in increasing speed without losing accuracy.

Q5: Can I rely only on repeated patterns to crack JEE Physics?

No. Repeated patterns are extremely helpful, but JEE can include new variations. Strong conceptual understanding, supported by practice of PYQs and mock tests, is essential.

Conclusion

JEE Physics may appear unpredictable at first glance, but careful analysis of previous year questions reveals a strong repetition of concepts and question models. Students who recognise these patterns and learn how to approach them systematically gain a considerable edge in both speed and accuracy.

By focusing on high-weightage topics like Mechanics, Electromagnetism, Optics, Modern Physics, Thermodynamics, and SHM, and by practising previous year questions in a structured way, aspirants can greatly improve their performance.

Through Deeksha Vedantu’s guided approach, students receive curated practice on repeated question types, clear solution frameworks, and continuous feedback. This ensures that when they sit for JEE, most Physics questions feel familiar in structure, if not in exact numbers.

With consistent effort, strategic practice, and the right support, mastering repeated JEE Physics questions becomes a realistic and achievable goal for every serious aspirant.