Science and Technology

विज्ञान तथा प्रविधि (कक्षा ८ - बीएलई)

Scientific Learning, Force and Simple Machines, Pressure, Energy, Heat, Light and Sound, Electricity, Matter, Living World, and Environment for Municipality BLE examination.

Solved Q&A (2)Assignments (2)Important Questions (2)

Prescribed Chapters

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Unit 2

Force and Simple Machines (Three Classes of Levers & Pulleys)

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Lesson 2Notes Ready ✓

Force and Simple Machines (Three Classes of Levers & Pulleys)

बल र सरल यन्त्रहरू (तीन प्रकारका उत्तोलक र घिर्नी)

Principles of simple machines: Mechanical Advantage (MA = L/E), Velocity Ratio (VR = d_E / d_L), Efficiency (η = MA/VR × 100%), three classes of levers, wheel & axle, inclined plane, and pulley systems.

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Unit 3

Pressure in Fluids & Atmospheric Pressure

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Lesson 3Syllabus Mapped

Pressure in Fluids & Atmospheric Pressure

चाप: तरल पदार्थको चाप र वायुमण्डलीय चाप

Definition of pressure (P = F/A), Pascal's Law, hydraulic press and brakes, liquid pressure (P = hρg), upthrust, Archimedes' principle, and law of flotation.

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