HSC Physics Question Bank with Important Questions – Mechanical Properties of Fluids 2026
- Swarangi Nawge
- 9 hours ago
- 4 min read
Preparing for the Maharashtra Board Class 12 exams requires a blend of conceptual depth and strategic practice. As we approach the HSC Physics Question Bank with Important Questions – Mechanical Properties of Fluids 2026 session, students must recognize that this chapter is not just a theoretical hurdle but a foundational pillar for both medical entrance exams (NEET) and engineering applications.
In the 2026 board exam pattern, "Mechanical Properties of Fluids" holds a weightage of 5 marks (7 marks with options), making it a "must-master" unit for anyone aiming for a 90+ score.
Importance of the HSC Physics Question Bank with Important Questions – Mechanical Properties of Fluids 2026
The official question bank released by SCERT Maharashtra is designed to align with the latest syllabus and evaluation scheme. For 2026, the focus has shifted slightly toward application-based questions—particularly those linking fluid dynamics to medical instruments like the sphygmomanometer (blood pressure monitor) and the physics of blood flow. By analyzing previous years' papers (2018–2025), it is evident that certain derivations and definitions are "recurring favorites" of the board examiners.
Chapter Overview and Weightage Analysis
Before diving into the questions, understanding the blueprint is essential. The paper typically consists of 70 marks for theory and 30 for practicals.
Section | Question Type | Marks per Question | Frequency for this Chapter |
Section A | MCQs & Very Short Answer | 1 Mark | High (1-2 questions) |
Section B | Short Answer I (SA-I) | 2 Marks | Moderate (Definitions/Simple Numericals) |
Section C | Short Answer II (SA-II) | 3 Marks | High (Derivations/Complex Numericals) |
Section D | Long Answer (LA) | 4 Marks | Occasional (Combined Derivations) |
High-Yield Topics & Repeated Questions (2018–2025)
Based on official board trends and the HSC Physics Question Bank with Important Questions – Mechanical Properties of Fluids 2026, here are the most critical topics you should prioritize:
1. Surface Tension and Surface Energy
This is the most "scoring" sub-topic of the chapter.
Molecular Theory of Surface Tension: Explain surface tension on the basis of molecular theory (3 Marks).
Surface Energy: Relation between surface energy and surface tension (2-3 Marks).
Laplace’s Law: Derive the expression for excess pressure inside a liquid drop and a soap bubble (4 Marks).
Capillary Action: Ascent formula for capillary rise using the forces method (3 Marks).
2. Fluid Dynamics and Bernoulli’s Principle
With an increasing emphasis on medical physics in 2026, Bernoulli’s applications are highly anticipated.
Bernoulli’s Equation: State and derive Bernoulli’s principle (3-4 Marks).
Applications: Working of a Venturi tube, Atomizer, and the lifting of an aircraft wing (2-3 Marks).
Torricelli’s Law: Speed of efflux for an open tank (2 Marks).
3. Viscosity and Terminal Velocity
Stoke’s Law: State the law and its application in finding viscous force (2 Marks).
Terminal Velocity: Derive the expression for the terminal velocity of a sphere falling through a viscous medium (3 Marks).
Reynolds Number: Definition and significance in determining flow types (Laminar vs. Turbulent) (1-2 Marks).
Essential Formulas Name List for Quick Revision
To solve the numerical portion (which accounts for roughly 30% of the paper), ensure you have these formulas memorized by name and application:
Pressure due to a liquid column
Pascal’s Law (Hydraulic Lift)
Equation of Continuity
Bernoulli’s Equation
Surface Tension (Force per unit length)
Surface Energy (Work done per unit area)
Excess Pressure in a Liquid Drop/Soap Bubble
Capillary Rise (Ascent Formula)
Coefficient of Viscosity
Stoke’s Law Force
Terminal Velocity
Reynolds Number
Numerical Practice: What to Expect in 2026?
The 2026 exams are predicted to feature numericals that test unit conversions (e.g., from CGS to SI units). Common problem types include:
Calculating the work done in blowing a soap bubble of a specific radius.
Finding the height of liquid rise in a capillary tube given the angle of contact.
Determining the terminal velocity of a rain drop.
Pressure differences in U-tube manometers.
Medical Relevance: Fluids in the Human Body
For students eyeing a medical career, this chapter is crucial. In 2026, examiners are expected to frame questions around:
Blood Pressure Measurement: How the height of a mercury column in a sphygmomanometer relates to hydrostatic pressure (P = h\rho g).
Viscosity of Blood: Why blood flow slows down in capillaries compared to arteries (linked to the Equation of Continuity).
Embolism: The physics of air bubbles in the bloodstream (linked to Surface Tension and Capillarity).
Official Resources and Important Links
To download the latest official documents, please visit the following portals:
MSBSHSE Official Question Papers: Official Maharashtra Board Link
SCERT Maharashtra Question Bank (Prashnapedhi): Official SCERT Access
Conclusion
The HSC Physics Question Bank with Important Questions – Mechanical Properties of Fluids 2026 is your roadmap to success in the upcoming board exams. By focusing on surface tension, Bernoulli's applications, and terminal velocity, you can easily secure the 7 marks assigned to this unit. Remember, Physics is not just about memorizing; it’s about visualizing how fluids behave around us—from the soap bubbles we blow to the blood flowing through our veins.
FAQ: HSC Physics Question Bank with Important Questions – Mechanical Properties of Fluids 2026
Q1: Is the official HSC Physics Question Bank with Important Questions – Mechanical Properties of Fluids 2026 sufficient for passing?
A: While the question bank is an excellent resource for understanding the question patterns and identifying high-weightage topics, you should also solve the last 5 years of PYQs and refer to the official textbook for complete conceptual clarity.
Q2: Which derivation is most frequently asked from this chapter?
A: The "Ascent Formula for Capillary Rise" and "Laplace’s Law for Excess Pressure" have appeared most frequently in the last decade of Maharashtra Board exams.
Q3: How many marks can I expect from the "Mechanical Properties of Fluids" chapter in 2026?
A: You can expect 5 marks without options and up to 7 marks including options. This usually includes one numerical and one theory/derivation question.
Q4: Does the board give marks for diagrams even if the explanation is wrong?
A: Yes, in the Maharashtra Board, neat and labeled diagrams carry specific "step marks." For instance, a 3-mark derivation usually allocates 1 mark specifically for the diagram.
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