Physics – Concept – Important One Liners To Remember

*  One mega watt hour (MWH) is equal to 3.6 × 109 joule

*  The Element of an electric heater is made of Nichrome

* At – 40o Celsius temperature are the temperature on Celsius and Fahrenheit scales equal

 * When water is heated from 0o Celsius to 100o Celsius, the volume of water First decrease , then increase

* Einstein got the Nobel prize for Photo-electric effect

* Gas law was given by Boyle

* The Period of revolution round the sun is maximum by  Mars

* Persistence of vision is the principle behind Cinema

* Galvanometer can be converted into a voltmeter by using High resistance in series

* Fire in the diesel engine is produced by Compression

* Kilowatt – hour is a unit of Power

* The ozone layer protects us from Ultra violet rays

* Ampere-hour is the unit of Amount of charge

* Roentgen discovered X-Rays

* Red, Green, Blue are primary colors

* Light from the laser is Monochromatic

 * Iron  metal is commonly used for making an electromagnet

 * The weight of a body is Maximum at the poles

* Choke is used to Reduce the current in AC circuit

 * In a standing wave the distance between a node and adjacent antinode is λ / 4

 * One Kilo Calorie heat will be equal to 4.2 x 103 Joule

* Only one part of moon can be seen from earth because the period of rotation and revolution are equal

* Blisters are formed more rapidly by the steam of boiling water in comparision to boiling water itself because Stream has latent heat

* The I.C Chip used in a computer is made up of Silicon

* Ball pen works on the principle of Capillarity and surface tension

* Parsec is a unit of Astronomical distance

* Growth of the baby in the uterus is found using Ultra sound

* Lightning conductors are made up of Copper

* Prithivi  is the surface to surface missile that is made in India