*9th Physics Most Important Guess Paper 2026*
*Chapter No. 01: Physical Quantities and Measurement*
*Short Questions:*
- Define science. Why is accurate measurement important in experiments?
- What are derived units? Basic units of area and speed are derived from which units?
- Why is it important to establish a unit for the measurement of a quantity?
- Define physical quantities. How are physical quantities measured?
- Define non-physical quantities. What are base quantities?
- Define scientific notation.
- Define prefixes. Mention measurement and second with respect to units.
- Brief explanation of the International System of Units (SI).
- What is the least count of a meter rule? Define parallax error.
- What is a Vernier Caliper? How is the least count of a Vernier Caliper determined?
- Who invented Vernier Caliper? What is meant by Vernier constant?
- What is the unit of charge in basic units?
- Define pitch of a screw gauge. Briefly explain the Micrometer Screw Gauge.
- What is the method of measuring on a measuring cylinder?
- What is the method for accurate measurement of volume using a cylinder?
- What is meant by significant figures in a measurement? What is a doubtful digit in any measurement?
- Write the names of three base and derived quantities.
- Why are prefixes used?
*Detailed Questions:*
- What is meant by base and derived quantities? Write their names and symbols.
- Write a note on Vernier Calipers.
*Chapter No. 02: Kinematics*
*Short Questions:*
- Write two branches of mechanics. Define dynamics.
- What does the length of a line represent in the graphical representation of a vector?
- Define resultant vector.
- What is meant by average speed? Define velocity.
- Difference between rest and motion. Difference between distance and displacement.
- Difference between speed and velocity with an example.
- Define uniform and non-uniform acceleration.
- What does a straight line represent in a distance-time graph?
- Define distance-time graph. What are independent variables?
- What is meant by a speed-time graph and its importance?
- Under what conditions is a body considered to be falling freely?
- Write the three equations of motion.
- Define Special Theory of Relativity.
- Define scalar and vector quantities and give five examples of each.
- Write the Head-to-Tail rule for the addition of vectors.
*Numerical:* 2.2, 2.3, 2.1
*Examples:* 2.3, 2.6
*Detailed Questions:*
- How can a vector be represented graphically?
- Prove that the area under a speed-time graph is equal to the distance covered by a body.
- Describe the difference between distance and displacement.
- Explain acceleration.
- Write the difference between speed and velocity.
*Chapter No. 03: Dynamics*
*Short Questions:*
- What is conceptualized about force? What is friction? What is air resistance?
- Define gravitational force. Define magnetic force.
- Why does an astronaut throw a wrench in space?
- What is meant by gravitational field?
- What are two ways to reduce friction?
- Why does a cricketer pull his hands back while catching a ball?
- State the Law of Conservation of Momentum.
- Define impulse of force.
- What is elasticity? What is elastic force?
- Why are strong and weak nuclear forces considered non-contact forces?
- Define inertia. State Newton's First Law of Motion.
- Differentiate between mass and weight.
- Define gravitational field. Define friction.
- What do you know about hovercraft?
- What is meant by momentum? What is meant by crumple zones?
- Define isolated system. What changes can a force bring in motion?
- Define terminal velocity.
*Numerical:* 3.2, 3.3, 3.4
*Examples:* 3.1, 3.2
*Detailed Questions:*
- What is force? Write a note on its types.
- Define momentum and state Newton's Second Law of Motion in terms of momentum.
- State the Law of Conservation of Momentum.
- What is friction? Write methods to reduce it.
*Chapter No. 04: Turning Effect of Forces*
*Short Questions:*
- Define Line of Action of Force and Moment Arm.
- What is resolution of forces? What are the components and perpendicular components of a vector?
- What is meant by the Principle of Moments?
- What is dynamic equilibrium? Explain unstable equilibrium.
- What is centripetal force?
- Define like and unlike parallel forces.
- Define torque (moment of force).
- What is the turning effect of force? What is the axis of rotation?
- Why are door handles installed far from the hinges?
- Define trigonometry. What is meant by static equilibrium?
- What is stable equilibrium? What is neutral equilibrium?
- What role does the centrifuge play during the spin cycle in a washing machine dryer?
*Numerical:* 4.1
*Examples:* 4.2, 4.3, 4.5
*Detailed Questions:*
- State the conditions of equilibrium.
- Explain centripetal force with the help of a formula.
- Explain the Principle of Moments.
*Chapter No. 05: Work, Energy and Power*
*Short Questions:*
- Define energy. Importance of energy for motion and work.
- Define kinetic energy. Define work. Define Joule.
- Define Watt. Who was the inventor of the steam engine?
- Define potential energy. Define internal energy.
- Define nuclear energy. What is Einstein's Mass-Energy Equivalence Law?
- Define power. What is meant by the efficiency of a machine?
- What is meant by an ideal machine?
*Numerical:* 5.1, 5.3, 5.6, 5.11
*Examples:* 5.4, 5.5
*Detailed Questions:*
- Define kinetic energy and derive its formula.
- Explain potential energy (P.E.).
- State the Law of Conservation of Energy.
*Chapter No. 06: Mechanical Properties of Matter*
*Short Questions:*
- What is deforming force?
- Define elasticity?
- What is spring constant?
- What is meant by the term elastic limit?
- Define elastic limit?
- State Hooke's Law?
- Define density?
- Why do different materials have different masses for the same volume?
- What is pressure?
- How does contact area affect pressure?
- How can the density of a material be determined?
- What happens when we walk on smooth ground compared to pebbles?
- Why is it painful to walk barefoot on pebbles?
- What is atmospheric pressure?
- How does atmospheric pressure vary with altitude?
- What is the formula for pressure in a liquid at a specific depth?
- What is the formula for pressure applied on fluids including gases?
- What is standard atmospheric pressure?
- What is a force multiplier?
- State Hooke's Law?
- Write the main advantages of a hydraulic system?
- How does a hydraulic press work according to Pascal's Law?
- What is the relationship between the pressure of a liquid and the depth of the liquid?
*Numerical:* 6.2, 6.4, 6.9
*Examples:* 6.1, 6.2, 6.3
*Detailed Questions:*
- Explain Hooke's Law?
- Explain pressure in liquids?
- Explain Pascal's Law?
*Chapter No. 07: Thermal Properties of Matter*
*Short Questions:*
- Explain temperature?
- What is heat?
- Define internal energy?
- Why should the alcohol in a thermometer be coloured?
- Define absolute zero?
- What is a thermometer?
- Why should the material of a thermometer not turn into vapors?
- Differentiate between Celsius and Kelvin scales?
- How does a thermocouple thermometer work?
- Why are the walls of a thermometer bulb made thin?
- How is the Fahrenheit scale different from the Celsius scale?
- What is the effect of increasing the temperature of a liquid?
- What is meant by the thermometric property of a substance?
- Describe the major scales used for measuring temperature?
*Numerical:* 7.1, 7.3
*Examples:* 7.1
*Detailed Questions:*
- Compare the three scales for measuring temperature?
- Explain the characteristics of a thermometer?
- Describe a liquid-in-glass type thermometer?
*Chapter No. 08: Magnetism*
*Short Questions:*
- Define magnetism?
- Define magnetic materials?
- What is meant by magnetization?
- Write the difference between temporary and permanent magnets?
- How does the strength of the magnetic field vary near the poles?
- How does an AC generator produce current?
- Explain a magnetic relay?
- What is the single-stroke method in stroking techniques?
- What is the right-hand grip rule?
- How does AC current demagnetize a magnet?
- What happens when a bar magnet is suspended horizontally?
- What is meant by the south magnetic pole of a bar magnet?
- What is a magnetic field?
- What is magnetic line of force and what is meant by its lines?
- Define electromagnet?
- Why is iron called a temporary magnet?
- Explain the stroking method for making a steel bar magnetic?
- How to make a magnet using a solenoid?
- What are magnetic lines of force?
*Detailed Questions:*
- Explain the properties of magnets?
- Write the uses of permanent magnets?
- Explain electromagnets and their applications?
- What is a circuit breaker?
- Describe its working process with the help of a diagram?
*Chapter No. 09: Nature of Science*
*Short Questions:*
- Differentiate between biological sciences and physical sciences?
- What is time dilation?
- Space and time are interconnected and how do they explain each other?
- What is quantum mechanics?
- What is the primary objective of medical physics?
- What is the scientific method?
- Prepare a list of the basic steps of the scientific method?
- Is a scientific theory an absolute truth?
- How does physics explain space?
- Explain the fundamental concepts behind heat and thermodynamics?
- What is studied in acoustics physics?
- Explain the study of astrophysics?
- What are the different ways observations can be taken?
- How is a theory formed?
- What is a hypothesis?
- Differentiate between theory and law?
*Detailed Questions:*
- Explain the scientific method?
- Explain the branches of physics?
- Describe the interdisciplinary nature of physics?
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*Study Plan aur Ahem Tips*
*Conceptual Learning:* Is saal 15 number "Analytical" (tijziyati) sawalat ke liye rakhe gaye hain aur O-Level taraz ke ho sakte hain. Is liye sirf rata marne ke bajaye concepts ko samjhne par tawajjah dein.
*Mashqi Sawalat:* Board ki taraf se mashqi sawalat ko lazmi tayar karne ki hidayat di gayi hai.
*Numerical aur Theory:* Long sawal ke kisi bhi hisse a) ya b) me numerical ya theory puchi ja sakti hai. Lehaaza dono ki barabar tayari karein.
*Diagrams aur Tables:* Kitab me mojood tamam diagrams, tables aur formula sheets ko achhi tarah tayar karein kyunki ye paper ka ahem hissa hon ge.
*Study Plan:*
*Marhala 1: Short Sawalat ke liye behtareen combination*
- *Question #2:* Chapter 1 aur 3 ko mukammal tayar karein, is se aap ke 6 sawal hal ho jayen ge (aap ko sirf 5 karne hain).
- *Question #3:* Chapter 4 aur 5 ko achhi tarah tayar karein, yahan se bhi 6 sawal ban jayen ge.
- *Question #4:* Chapter 7 aur 8 par tawajjah dein, un se bhi 6 sawal hal ho sakte hain.
*Marhala 2: Long Sawalat ki hikmat-e-amli*
Choonke aap ko 3 me se 2 long sawal karne hain, is liye in me se koi se do pairs muntakhib kar sakte hain:
1. *Pehla Pair (Q5):* Chapter 1, 2 aur 3.
2. *Doosra Pair (Q6):* Chapter 4, 5 aur 6.
3. *Teesra Pair (Q7):* Chapter 7, 8 aur 9.
Mashwara: Pehle do pairs (Chapter 1 se 6) ziyada tar talba ke liye aasan hote hain.
*Marhala 3: MCQs*
- Chapter 3, 4 aur 6 se 2, 2 MCQs aayen ge, un chapters ko MCQs ke liye ziyada gehrayi se parhein.
- Baqi tamam chapters ke mashqi MCQs lazmi yaad karei
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