CBSE Class 10 Science Question Bank with Important Questions – Light Reflection and Refraction, Human Eye, Electricity, Magnetic Effects of Current 2026
- Feb 17
- 4 min read
Preparing for the CBSE Class 10 Science Question Bank in 2026 requires more than just rote learning; it demands a strategic grasp of how physics governs everything from the gadgets in your pocket to the complex medical imaging used in hospitals today. As the 2026 board exams approach, the Central Board of Secondary Education (CBSE) has shifted its focus heavily toward competency-based questions. This means your ability to apply concepts to real-world scenarios is what will set you apart.
In this comprehensive guide, we break down the high-weightage Physics chapters, identify the most repeated questions from the last decade of papers, and provide you with a structured path to scoring a perfect 100 in Science.
1. Light: Reflection and Refraction – The Foundation of Optics
This unit remains one of the most scoring sections in the CBSE Class 10 Science Question Bank. In 2026, expect a significant number of questions on the application of lenses in medical technology, such as endoscopes and surgical microscopes.
Key Concepts and Repeated Questions
Ray Diagrams: You must master the six cases of image formation by a concave mirror and the two cases for a convex mirror. In the 2026 exam, questions often ask you to "identify the position of the object" given the nature of the image.
Refractive Index: This is a hot favorite for numerical problems. Pay close attention to the relationship between the speed of light in different media.
The Mirror and Lens Formulae: While we won't list the equations here, ensure you are comfortable with the Sign Convention. A simple mistake in a plus or minus sign can cost you 3 marks.
Important Formulas :
Mirror Formula
Lens Formula
Magnification Formula (for both Mirrors and Lenses)
Power of a Lens Formula
Refractive Index Formula
2. The Human Eye and the Colourful World: Physics Meets Biology
This chapter bridges the gap between physics and the medical world. The 2026 syllabus emphasizes the corrective measures for vision defects, which is crucial for students eyeing a career in medicine.
Most Probable Questions for 2026
Power of Accommodation: Explain how the ciliary muscles change the focal length of the eye lens.
Defects of Vision: Every year, a 5-mark question appears on Myopia, Hypermetropia, or Presbyopia. You must be able to draw the "defect" diagram and the "correction" diagram using the appropriate lens.
Atmospheric Refraction: Why do stars twinkle? Why is the sunset red? These conceptual questions are frequently asked in the MCQ section (Section A).
3. Electricity: The Powerhouse Chapter
If there is one chapter in the CBSE Class 10 Science Question Bank that students find challenging yet rewarding, it is Electricity. For 2026, the weightage for this chapter is expected to be around 7–9 marks.
Mastery Areas
Ohm’s Law: Understand the V-I graph. A common question involves calculating resistance from the slope of this graph.
Resistance Factors: Be ready for questions on how resistivity changes with material, but resistance changes with length and area.
Series vs. Parallel Circuits: The board loves asking about the advantages of parallel circuits in domestic wiring.
Essential Formula :
Ohm’s Law Formula
Resistance in Series and Parallel
Joule’s Law of Heating
Electric Power Formulas
Electric Current and Potential Difference Definitions
4. Magnetic Effects of Electric Current: Visualizing Fields
This chapter is highly visual. In 2026, the focus has moved away from heavy theory to the understanding of magnetic field patterns and safety measures in home circuits.
Top Questions to Practice
Magnetic Field Lines: List the properties and explain why two field lines never intersect.
Solenoids: Compare the magnetic field of a solenoid with that of a bar magnet.
Safety Features: Short circuits and overloading are critical topics. Know the function of an Earth Wire and a Fuse.
CBSE Class 10 Science Question Bank: Analysis of 2026 Marking Scheme
Based on the latest official updates, the 2026 Science paper (Subject Code 086) will follow this structure:
Section | Question Type | Total Marks |
Section A | 20 MCQs (Case-based & Assertion-Reason) | 20 Marks |
Section B | 6 Short Answer Questions (2 marks each) | 12 Marks |
Section C | 7 Short Answer Questions (3 marks each) | 21 Marks |
Section D | 3 Long Answer Questions (5 marks each) | 15 Marks |
Section E | 3 Case-Based/Source-Based Questions | 12 Marks |
HSC OCM and Official Links for Maharashtra Board Question Banks
While this guide focuses on CBSE, many students also look for resources for the Maharashtra State Board. The Maharashtra State Board of Secondary and Higher Secondary Education (MSBSHSE) and SCERT provide dedicated question banks for Class 10 and 12.
Official CBSE Question Bank Section: https://cbseacademic.nic.in/
CBSE Direct Access Link: Official CBSE Question Bank
Conclusion
Success in the 2026 Science board exam is a blend of conceptual clarity and consistent practice. By focusing on the high-weightage areas of Light and Electricity, and mastering the diagrams of the Human Eye, you place yourself in the top bracket of scorers. Remember to solve at least five years of previous papers to understand the "language" of the board examiners.
FAQ: CBSE Class 10 Science Question Bank 2026
Q1: Is the CBSE Class 10 Science Question Bank enough to score 95+?
Ans: While the CBSE Class 10 Science Question Bank is an excellent resource for practicing variety, you must complement it with a thorough reading of the NCERT textbook. Most competency-based questions in 2026 are derived from the "In-text" activities.
Q2: Which Physics chapter has the highest weightage in 2026?
Ans: Traditionally, "Light – Reflection and Refraction" and "Electricity" carry the highest weightage, often totaling nearly 15-18 marks together.
Q3: Are previous year questions (PYQs) repeated?
Ans: Concepts are repeated 100%, but the phrasing changes. For example, a question on Myopia might be framed as a "medical case study" of a student unable to see the blackboard.
Q4: Where can I find the official CBSE Question Bank?
Ans: You should always refer to the CBSE Academic Website for the most authentic and updated practice materials.
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