Top 10 Most Repeated Topics in Physics for JEE Mains - Boost Your Score in JEE 2026 Exam

Most Repeated Physics Topics for JEE Mains 2026

In this section, we will be diving into the top 10 most repeated topics in physics for JEE Mains. Our experts have collected this data by analyzing the last 10 years question papers of JEE Mains physics of all slots. Along with the topic name, the total number of questions asked in the span of 10 years is also given in the table below. This data about the most repeated physics topics for JEE Mains is going to help students strategize for their exam. Students must avoid skipping the following topics as they are the top 10 most repeated topics in physics for JEE mains from 2016 to 2025.

As seen, the Logic Gates is the most repeated topic so far with 48 questions. The 10th most important topic is Newton's laws of motion. As a bonus information, you can note that the topic after Newton's laws is Young's double slit experiment -1 and Carnot Engine with 34 and 33 questions asked from them so far. This information about most repeated physics topics for JEE mains is going to help focus on the high yielding physics topics and increase your chances of acing the exam!

Previous Year Questions on Most Important Chapters for JEE Mains Physics 2026

In this section, we shall look at some of the topics questions asked in previous years to help you get an idea of what kind of questions are asked. We shall go topic wise from the above table of topics:

Logic Gates

Q.1For the circuit shown above, the equivalent GATE is :

Option 1:

OR gate

Option 2:

NOT gate

Option 3:

AND gate

Option 4:

NAND gate

Correct Answer:

OR gate

Solution:

Hence, the answer is the option (1).

De-broglie wavelength of an electron

Q.1 A proton of mass $m_p$ has the same energy as that of a photon of wavelength $\lambda$. If the proton is moving at a non-relativistic speed, then the ratio of its de Broglie wavelength to the wavelength of the photon is:

- Option 1: ${\displaystyle \frac{1}{c}}\sqrt{{\displaystyle \frac{2E}{m_p}}}$

- Option 2: ${\displaystyle \frac{1}{c}}\sqrt{{\displaystyle \frac{E}{m_p}}}$

- Option 3: ${\displaystyle \frac{1}{c}}\sqrt{{\displaystyle \frac{E}{2m_p}}}$

- Option 4: ${\displaystyle \frac{1}{2c}}\sqrt{{\displaystyle \frac{E}{m_p}}}$

Correct Answer: ${\displaystyle \frac{1}{c}}\sqrt{{\displaystyle \frac{E}{2m_p}}}$

Energy of photon:

$

E_{\text{photon}} = \frac{hc}{\lambda} = E

$

Energy of proton:

$

E_{\text{proton}} = \frac{1}{2} m_p v^2 = E

$

De-Broglie wavelength of proton:

$

\lambda_p = \frac{h}{p} = \frac{h}{\sqrt{2m_pE}}

$

Ratio:

$

\frac{\lambda_p}{\lambda_{\text{photon}}}

= \frac{\tfrac{h}{\sqrt{2 m_p E}}}{\tfrac{hc}{E}}

= \frac{1}{c}\sqrt{\frac{E}{2 m_p}}

$

Hence, the answer is Option (3).

---

Amplitude Modulation

Q.1Given below are two statements:

Statement I: For transmitting a signal, the size of the antenna should be comparable to the wavelength of the signal (at least $l=\frac{\lambda }{4}$).

Statement II: In amplitude modulation, the amplitude of the carrier wave remains constant (unchanged).

Options:

1. Statement I is correct but Statement II is incorrect

2. Both Statement I and Statement II are correct

3. Statement I is incorrect but Statement II is correct

4. Both Statement I and Statement II are incorrect

Correct Answer: Statement I is correct but Statement II is incorrect

Solution:

- Statement I is correct.

- In amplitude modulation, amplitude of the carrier wave is varied, not constant.

Hence, the answer is Option (1).

---

Projectile Motion

Q.1 A ball having kinetic energy $KE$ is projected at an angle of ${60}^{\circ }$ with the horizontal. What will be the kinetic energy at the highest point of its flight?

- Option 1: ${\displaystyle \frac{KE}{8}}$

- Option 2: ${\displaystyle \frac{KE}{4}}$

- Option 3: ${\displaystyle \frac{KE}{16}}$

- Option 4: ${\displaystyle \frac{KE}{2}}$

Correct Answer: ${\displaystyle \frac{KE}{4}}$

Solution:

Initial kinetic energy:

$

KE = \tfrac{1}{2} m u^2

$

At the highest point:

$

v = u \cos 60^\circ = \frac{u}{2}

$

$

KE_f = \tfrac{1}{2} m \left(\frac{u}{2}\right)^2 = \frac{KE}{4}

$

Hence, the answer is Option (2).

---

Nature of Electromagnetic Waves

Q.1 The electric field of an electromagnetic wave in free space is:

$

\vec{E} = 57 \cos\left[7.5 \times 10^6 t - 5 \times 10^{-3}(3x + 4y)\right] (4\hat{i} - 3\hat{j}) \ \text{N/C}

$

The associated magnetic field in Tesla is:

1.

$

\vec{B} = \frac{57}{3\times10^8} \cos[\cdots](5\hat{k})

$

2.

$

\vec{B} = \frac{57}{3\times10^8} \cos[\cdots](\hat{k})

$

3.

$

\vec{B} = -\frac{57}{3\times10^8} \cos[\cdots](5\hat{k})

$

4.

$

\vec{B} = -\frac{57}{3\times10^8} \cos[\cdots](\hat{k})

$

Correct Answer: Option (3)

Solution:

Magnitude:

$

|B_0| = \frac{|E_0|}{c}, \quad E_0 = 57 \times 5

$

Direction:

$

\hat{B} = \hat{c} \times \hat{E}

= \left(\frac{3\hat{i}+4\hat{j}}{5}\right) \times \left(\frac{4\hat{i}-3\hat{j}}{5}\right)

= -\hat{k}

$

So,

$

\vec{B} = -\frac{57}{3\times10^8}\cos[\cdots](5\hat{k})

$

Hence, the answer is Option (3).

---

Hooke’s Law

Q.1 Two wires A and B are made of the same material. Their length ratio is $L_A:L_B=1:3$, and their diameter ratio is $d_A:d_B=2:1$. If both are stretched by the same force, find the ratio of elongations $\mathrm{\Delta }{L}_A:\mathrm{\Delta }{L}_B$.

- Option 1: 1 : 6

- Option 2: 1 : 12

- Option 3: 3 : 4

- Option 4: 1 : 3

Correct Answer: 1 : 12

Solution:

$

\frac{\Delta L_A}{\Delta L_B}

= \left(\frac{L_A}{L_B}\right)\left(\frac{d_B}{d_A}\right)^2

= \frac{1}{3}\cdot\left(\frac{1}{2}\right)^2

= \frac{1}{12}

$

Hence, the answer is Option (2).

---

Kinetic Energy

Q.1 A car accelerates from rest to $u$ m/s, spending energy $E$. The energy required to further accelerate it from $u$ to $2u$ m/s is $nE$. Find $n$.

Correct Answer: 3

Solution:

$

E_1 = \tfrac{1}{2} m u^2 = E

$

$

E_2 = \tfrac{1}{2} m (2u)^2 - \tfrac{1}{2} m u^2 = \tfrac{3}{2} m u^2 = 3E

$

So, $n=3$.

---

Parallel Grouping of Resistance

Q.1 10 resistors each of $10\mathrm{\Omega }$ are connected in such a way as to obtain maximum and minimum resistance. Find the ratio $\frac{R_{max}}{R_{min}}$.

Correct Answer: 100

Solution:

$

R_{\max} = 10 \times 10 = 100\ \Omega \quad (\text{series})

$

$

R_{\min} = \frac{10}{10} = 1\ \Omega \quad (\text{parallel})

$

$

\frac{R_{\max}}{R_{\min}} = \frac{100}{1} = 100

$

---

Adiabatic Process

Q.1 A gas expands adiabatically from 8 L to 27 L. If $\frac{P_2}{P_1}=\frac{16}{81}$, then find $\frac{C_p}{C_v}$.

- Option 1: $\frac{1}{2}$

- Option 2: $\frac{4}{3}$

- Option 3: $\frac{3}{2}$

- Option 4: 3

Correct Answer: $\frac{4}{3}$

Solution:

For adiabatic process:

$

P_1 V_1^\gamma = P_2 V_2^\gamma

$

$

\left(\frac{8}{27}\right)^\gamma = \frac{16}{81}

$

$

\left(\frac{2}{3}\right)^{3\gamma} = \left(\frac{2}{3}\right)^4

$

$

3\gamma = 4 \quad \Rightarrow \quad \gamma = \frac{4}{3}

$

Hence, the answer is Option (2).

---

Newton’s Second and Third Law of Motion

Q.1 A force $(10\hat{i}+5\hat{j})$ N acts on a mass of 100 g. The position of the object at $t=2$ s, starting from rest, is $(a\hat{i}+b\hat{j})$ m. Find the ratio $\frac{a}{b}$.

Correct Answer: 2

Solution:

$

F = (10\hat{i}+5\hat{j}), \quad m = 0.1 \text{ kg}

$

$

a = \frac{F}{m} = (100\hat{i} + 50\hat{j})

$

Displacement:

$

s = ut + \tfrac{1}{2} a t^2

= \tfrac{1}{2} (100\hat{i} + 50\hat{j})(4)

= 200\hat{i} + 100\hat{j}

$

So,

$

a = 200, \quad b = 100, \quad \frac{a}{b} = 2

$

JEE Mains 2026 Exam Pattern

The table will give you a clear idea of the JEE Mains exam. Understanding basics will help you to get ready for diving into deeper topics of top 10 most repeated topics in physics for JEE Mains:

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Top 10 Most Important Chapters For JEE Mains Physics 2026

Acing the exam is all about studying smart these days due to the huge competition. Smart study requires strategy and in depth research. The good thing is we have already done the research for you. Again like the topics, we have curated a list of top 10 most important chapters for JEE mains physics 2026. This data is also researched and curated by experts from 2016 to 2025 all JEE Mains physics question papers.

This table has the name of the most important chapters for JEE Mains physics 2026 ( as “Chapter Name”) and to its right we have associated the total number of questions asked from that particular chapter over the 10 years.

After seeing the specially curated data for chapters and topics, you must be curious about the weightage of each chapter as well. Don’t worry! We have that list too. Our experts have created a list of weightage but this data is according to the most recent exam ( JEE Main 2025 both April and January sessions included).

JEE Mains Physics Weightage Chapter-Wise 2026 PDF

This data is given according to the latest JEE Mains exam. The percentage is the direct weightage associated with each chapter on the row.

Now that we have seen JEE Mains physics weightage chapter wise 2026, let’s see some books and resources you can refer to for the best preparation of the JEE Mains physics.

Best Books for Top 10 Most Repeated Topics in Physics

Experts say one book is not really enough for the preparation of such a competitive exam like JEE mains. Hence, we have listed down all the best books for each topic advised by experts.