Description
Motion : Linear motion – rectilinear, curvilinear; Rotational motion,
Oscillatory motion, Periodic motion.
Changes Around Us
Metric Weights and Measures : Sl units and their multiples and submultiples.
Measurements : Standard systems of measurements.
Sound : What is sound? Decibel scale of different sounds,
Characteristics of sound, Sonic boom, Ultrasound & echo.
Wave Motion :Transverse wave, Longitudinal wave.
Simple Machine : Lever, Pulley,Wedge, Inclined plane, Screw,Wheel & Axle.
The Lever : Lever of – first class, second class, third class.
Principle of Archimedes
Pascal’s Law
Reflection of Light : Laws of reflection, Image formation by plane &
spherical mirrors.
Refraction Through a Glass Slab : Lateral displacement, Refractive index,
Refraction through different mediums,Total internal reflection.
Refraction Through Prisms : Dispersion, Refraction through equilateral
prism, Re-combination of spectrum colours, Rainbow.
Refraction of Light Through lenses : Image formation by concave and
convex lenses.
Optical Instruments : Slide projector, Binoculars,Telescope, Compound
microscope, Magnifying glass camera, Periscope.
Microscope : Compound microscope, Electron microscope, Ray diagram.
Telescope : Refracting telescope, Ray diagram of refracting & reflecting
(cassegrain) telescope.
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