JEE Main physics, unit by unit.

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Question 1Section A: multiple choice

10\ \mathrm{g}

of steam at

100^\circ\mathrm{C}

is passed into

40\ \mathrm{g}

of ice at

0^\circ\mathrm{C}

in a container of negligible heat capacity, and all of the steam condenses. The specific latent heats of vaporisation and fusion of water are

2.268 \times 10^{6}\ \mathrm{J\,kg^{-1}}

and

3.36 \times 10^{5}\ \mathrm{J\,kg^{-1}}

. Take the specific heat capacity of water as

4200\ \mathrm{J\,kg^{-1}\,K^{-1}}

. Ignoring heat losses, what is the final temperature?

Ten sections, all 20 units

Built for the physics part of JEE (Main) Paper 1 (B.E./B.Tech.), on the 2027 syllabus: all 20 units, including the experimental skills unit, Section A multiple choice and Section B numerical-value questions. Physics only: no mathematics or chemistry, and not built for JEE Advanced or Paper 2.

Mechanics

1. Units, measurement and kinematics · 2. Laws of motion, work, energy and power · 3. Rotational motion and gravitation

Properties of matter, heat, oscillations and waves

4. Properties of solids and liquids, and heat · 5. Thermodynamics and the kinetic theory of gases · 6. Oscillations and waves

Electricity and magnetism

7. Electrostatics and current electricity · 8. Magnetism, induction and alternating current

Optics, modern physics and devices

9. Optics and electromagnetic waves · 10. Modern physics and electronic devices

Physics in JEE (Main) Paper 1
Section A	Multiple-choice questions with four options and one correct answer.	20 questions
Section B	Questions whose answer is a numerical value, entered as an integer on an on-screen keypad.	5 questions
Marking	+4 for a right answer, -1 for a wrong one and 0 if unanswered, in both sections.	100 marks
Time	Paper 1 is 3 hours for mathematics, physics and chemistry together, computer-based.	3 hours

The 2027 sessions

Session 1	20, 21, 22, 23, 24 and 28 January 2027
Session 2	2, 3, 4, 5, 6 and 7 April 2027

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