JEE Main 2026 21st Jan Shift 1 Physics Exam Analysis: Students Find it Moderate

JEE Main 2026 21 Jan Shift 1 Physics Exam Analysis: The JEE Main 21 January 2026 Shift 1 Physics paper tested students on core concepts from the Class 11 and 12 syllabus, balancing theory and numerical questions. This analysis provides a clear overview of topics covered, helping aspirants identify important areas, understand the question style of NTA, and plan their preparation for upcoming shifts effectively. It highlights key chapters, question patterns, and the distribution of marks across different physics units.

Overall Difficulty Level Physics Analysis – JEE Main 2026 (21 January, Shift 1)

• The overall difficulty level of the Physics section in the JEE Main 21 January 2026 morning shift was easy to moderate, making it manageable for well-prepared students.

• While relatively easier compared to Mathematics, the Physics paper included a balanced mix of conceptual and formula-based questions.

• The questions were designed to test core concepts, making the paper solvable for candidates who revised the important topics thoroughly.

• Most problems followed the standard NTA JEE Main pattern, ensuring a fair evaluation across the student pool.

Physics Topic-Wise Distribution (JEE Main 21 Jan Shift 1):

• 1 question from Thermal Properties of Fluids (Bernoulli’s Theorem)

• 2 questions from Optics (1 on Microscope, 1 on Power of Lens)

• 1 question from Semiconductors (Logic Gate)

• 2 questions from Units & Dimensions (1 Dimension, 1 Error Calculation)

• 1 question from Current Electricity

• 1 question from Calorimetry

• 1 question from Rotational Motion (Moment of Inertia)

JEE Main Physics Questions asked 21 Jan 2026

Q1. In a double slit experiment, the distance between the slits is 0.1 cm, and the screen is placed at a distance of 50 cm from the slit plane. When one slit is covered with a transparent sheet of thickness t and refractive index 1.5, the central fringe shifts by 0.2 cm. Find the value of t.

Q2. A current-carrying solenoid is placed vertically, and a particle of mass mmm having charge QQQ is released from rest. The particle moves along the axis of the solenoid with acceleration aaa. The value of aaa will satisfy: