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**🚀 11th Class Physics - Final Guess Paper 2026 🎯**
*According to the New Syllabus & Board Pattern!* 🔥
Assalam-o-Alaikum Students! Agar aap 11th Class Physics ke Board Exams me full marks secure karna chahte hain, to yeh **Most Important Long Questions** aur **Numericals** bilkul miss mat karein. Yeh past papers aur new SLO-based pattern ko mad-e-nazar rakh kar banaya gaya hai! 👇
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# # # 📋 MOST IMPORTANT LONG QUESTIONS
1. **Vector & Equilibrium:** Define and explain Scalar and Vector product of two vectors along with their important characteristics.
2. **Motion & Force:** Derive expressions for projectile motion: (i) Time of flight, (ii) Height attained, and (iii) Range. Explain elastic collision in 1D.
3. **Rotational Motion:** Define orbital velocity and derive its expression. State the law of conservation of angular momentum with daily life examples.
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4. **Fluid Dynamics:** State and prove **Bernoulli’s Equation** and the **Equation of Continuity**.
5. **Thermodynamics:** Explain the Carnot Engine cycle, state Carnot Theorem, and derive the expression for its efficiency.
6. **Waves:** Find the frequencies of the harmonics produced in an organ pipe when it is open at both ends and when closed at one end.
7. **Doppler Effect:** Analyze the cases of Doppler Effect when the source moves away or towards a stationary observer.
8. **Current Electricity:** State and explain **Kirchhoff’s Rules**. What is a **Wheatstone Bridge**? Explain its working with a diagram.
9. **Electromagnetism:** State and derive **Faraday’s Law of Electromagnetic Induction**.
10. **Modern Physics:** State two postulates of the Special Theory of Relativity and give its three consequences (Time dilation, length contraction, mass variation).
11. **Nuclear Physics:** What is radioactivity? Compare the properties and behavior of \alpha, \beta, and \gamma radiations.
# # # 🔢 TOP SELECTION NUMERICAL PROBLEMS
* **Vector Angle:** Find the angle between two vectors if the magnitude of their cross and scalar products are 4\sqrt{3} and 4, respectively.
* **Projectile Motion:** A cricket ball is hit upward with a velocity of 20\text{ m/s} at an angle of 45^\circ. Find time of flight, max height, and horizontal range.
* **Rotational Dynamics:** A flywheel rotating at 2100\text{ rev/min} is shut off. What torque is required to stop it in 3 minutes? (Given I = 36\text{ kg}\cdot\text{m}^2).
* **Work & Power:** A machine gun fires 6 bullets per minute with a velocity of 700\text{ m/s}. If each bullet has a mass of 40\text{ g}, find the power developed by the gun.
* **Fluid Flow:** A tiny water droplet of radius 0.010\text{ cm} descends through air. Calculate its terminal velocity (\eta_{\text{air}} = 19 \times 10^{-6}\text{ kg/m}\cdot\text{s}, \rho_{\text{water}} = 1000\text{ kg/m}^3).
* **Carnot Efficiency:** A Carnot engine operates between 600\text{ K} and 300\text{ K}. Calculate its maximum efficiency and work output if it absorbs 500\text{ J} of heat.
* **Waves (Organ Pipe):** An organ pipe has a length of 1\text{ m}. Determine frequencies of fundamental and first two harmonics if the pipe is open at both ends and closed at one end (v = 340\text{ m/s}).
* **Doppler Speed:** A train approaching a station at 90\text{ km/h} sounds a whistle of 1000\text{ Hz}. Find the apparent frequency heard by a listener on the platform when the train moves towards and away from the station.
* **Electrostatics:** A particle of charge +20\ \mu\text{C} is placed between two parallel plates, 10\text{ cm} apart with a potential difference of 0.5\text{ kV}. Calculate the electric field and force.
* **Temperature Resistance:** An electric fan winding has a resistance of 50\ \Omega at 30^\circ\text{C}. After running, it becomes 52\ \Omega. Find the temperature rise (\alpha = 0.0039\text{ K}^{-1}).
* **Nuclear Transmutation:** Uranium-238 is an alpha emitter. When it transmutes into a daughter nucleus, what is its mass number A, charge number Z, and its chemical symbol?

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