Physics

This Chapter contains topics like A Force can Change the State of Motion, Contact Forces, Exploring Forces, Force - A Push or a Pull, Non-contact Forces, Pressure, and Pressure exerted by Liquids and Gases.

This Chapter contains topics like Factors affecting Friction, Fluid Friction, Force of Friction, Friction : A Necessary Evil, Increasing and Reducing Friction, etc.

This Chapter contains topics like Amplitude, Time Period And Frequency Of A Vibration, Audible and Inaudible Sounds, Noise and Music, Noise Pollution, Sound is Produced by a Vibrating Body, and Sound Needs a Medium for Propagation.

This Chapter contains topics like Chemical Effects of Electric Current, Electroplating, and Liquids Conduct Electricity.

This Chapter contains topics like Earthquake, Charging by rubbing, Lightning, Charge, Sparks and Electric Charges, etc.

This Chapter contains topics like Braille System, Care of Eyes, Inside Our Eyes, Laws of Reflection, Multiple Images, Reflected Light Can be Reflected Again, Regular and Diffused Reflection, Sunlight - White or Coloured, etc.

This Chapter contains topics like The Stars and Constellations, Solar System, The Moon, etc.