IIT JAM Physics Question Paper 2025 with Solutions Available: Download PDF Here

IIT JAM 2026 Physics Exam Pattern

Before starting your preparation, it’s essential to get familiar with the official IIT JAM 2026 exam pattern for physics to understand the distribution of marks and question types.

IIT JAM 2025 Physics Question Paper PDF Download

This section provides direct access to the official question paper in an easy-to-download format. Candidates can use this paper to analyze the latest exam pattern, difficulty level, and topic-wise weightage. It will also help students practice authentic IIT JAM Physics questions to enhance their accuracy and speed. This section includes the PDF link for better preparation.

Download Now IIT JAM 2025 Physics Question Paper PDF

IIT JAM Physics 2025 Question Paper with Solutions

Candidates can download and solve the IIT JAM Physics 2025 Question Paper with Solutions to understand the question structure and marking pattern.

IIT JAM Physics Question Paper 2025 – Analysis

IIT JAM Physics 2025 paper consisted of theoretical and numerical questions about fundamental concepts in equal proportion. The overall difficulty level was from Moderate to Difficult, with a little higher than the last year.

In the IIT JAM Physics Question Paper 2025, there were more questions on Boolean Algebra, which were of a conceptual nature. Logic Gates did make it to the examination, but the number of questions from that section was comparatively less.

● The most challenging were the MSQ and NAT sections, which required considerable deep conceptual clarity.

● Thermodynamics, Mathematical Physics, and Mechanics were the most scoring sections.

● Electrostatics, Electrodynamics, and Optics were said to have tougher problems.

IIT JAM Physics 2025 – Section-wise Analysis

The IIT JAM Physics 2025 Analysis gives a detailed breakdown of the paper across key sections like Mechanics, Electromagnetism, Thermodynamics, Modern Physics, and more. This section highlights the chapter-wise weightage, difficulty level, and question trends, helping aspirants identify which areas carried the most marks and where to focus their revision.

In short, the IIT JAM Physics 2025 Exam preserved a good mix between theoretical and numerical. Those who have a good grip on the fundamentals and who could solve problems quickly would have found the paper to be lenient. However, the conceptual depths of these IIT JAM question papers could have been somewhat difficult for those who relied on practising with formulas.

IIT JAM Physics Questions with Solutions (Asked in JAM 2025)

Ques 1. Consider a volume $V$ enclosed by a closed surface $S$ having unit surface normal $\hat{n}$. For $\vec{r} = x\hat{i} + y\hat{j} + z\hat{k}$, the value of the surface integral $ \dfrac{1}{9} \iint_S \vec{r} \cdot \hat{n} , dS $ is

(a) $V$
(b) $3V$
(c) $V3$
(d) $V9$

Ans. (c)

Solution:

$\vec{r} = x\hat{i} + y\hat{j} + z\hat{k}$

From Gauss divergence theorem,

$\iint_S \vec{r} \cdot \hat{n} , dS = \iiint_V (\nabla \cdot \vec{r}) , d\tau$

$\nabla \cdot \vec{r} = \left( \dfrac{\partial}{\partial x}\hat{i} + \dfrac{\partial}{\partial y}\hat{j} + \dfrac{\partial}{\partial z}\hat{k} \right) \cdot (x\hat{i} + y\hat{j} + z\hat{k})$

$\nabla \cdot \vec{r} = (1 + 1 + 1) = 3$

So, $\iiint_V (\nabla \cdot \vec{r}) , d\tau = 3 \iiint_V d\tau = 3V$

$\dfrac{1}{9} \iint_S \vec{r} \cdot \hat{n} , dS = \dfrac{1}{9} \iiint_V (\nabla \cdot \vec{r}) , d\tau = \dfrac{1}{9} (3V)$

Hence, $\dfrac{1}{9} \iint_S \vec{r} \cdot \hat{n} , dS = V3$

Ques 2. Two point-particles having masses $m_1$ and $m_2$ approach each other in perpendicular directions with speeds $v_1$ and $v_2$, respectively, as shown in the figure below. After an elastic collision, they move away from each other in perpendicular directions with speed $v_1'$ and $v_2'$, respectively.

The ratio $\dfrac{v_2'}{v_1'}$ is

(a) $\dfrac{m_1^2 v_1}{m_2^2 v_2}$
(b) $\dfrac{m_1 v_1}{m_2 v_2}$
(c) $\dfrac{m_1^2 v_2}{m_2^2 v_1}$
(d) $\dfrac{m_1 v_2}{m_2 v_1}$

Ans. (a)

Solution:

From conservation of momentum in x-direction:

$m_1 v_1 + 0 = m_2 v_2' + 0$
$\Rightarrow v_2' = \dfrac{m_1 v_1}{m_2}$

In y-direction:

$0 + m_2 v_2 = m_1 v_1' + 0$
$\Rightarrow v_1' = \dfrac{m_2 v_2}{m_1}$

Now, $\dfrac{v_2'}{v_1'} = \dfrac{\dfrac{m_1 v_1}{m_2}}{\dfrac{m_2 v_2}{m_1}} = \dfrac{m_1^2 v_1}{m_2^2 v_2}$

Ques 3. Which one of the following figures represents the vector field $\vec{A} = y\hat{i}$?

($\hat{i}$ is the unit vector along the x-direction)

Ans. (a)

Solution:

$\vec{A} = y\hat{i}$

Field is in $+x$ direction when $y > 0$.
Field is in $-x$ direction when $y < 0$.

Option (a) is correct.

As the value of $y$ increases, the strength increases, i.e., the magnitude (length) of the vector increases.