| PHYSICS | Motion, Force and Work | Marks | 27 out of 80 |
MOTION
Distance and displacement, velocity; uniform and non-uniform motion along a straight line; acceleration, distance-time and velocity-time graphs for uniform motion and uniformly accelerated motion, equations of motion by graphical method; elementary idea of uniform circular motion.
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Force and Newton’s laws
Force and Motion, Newton’s Laws of Motion, Action and reaction forces, Inertia of a body, Inertia and mass, Momentum, Force and Acceleration. Elementary idea of conservation of Momentum.
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SA |
LA |
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Gravitation
Gravitation; universal law of gravitation, force of gravitation of the earth (gravity), acceleration due to gravity; mass and weight; free fall.
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SA |
LA |
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Floatation
Thrust and pressure. Archimedes’ principle, buoyancy, elementary idea of relative density.
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SA |
LA |
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Work, energy and power
Work done by a force, energy, power; kinetic and potential energy; law of conservation of energy.
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SA |
LA |
Numerical |
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Sound
Nature of sound and its propagation in various media, speed of sound, range of hearing in humans; ultrasound; reflection of sound; echo and SONAR. Structure of the human ear (auditory aspect only).
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SA |
LA |
Numerical |
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