General Awareness-Physics Notes-Applied Physics & Basic Physics-Part 2

General Awareness - Online Physics Notes - Basic Physics and Applied Physics - Part II

• Sun Rising and setting appears to be red due to scattering of just particle and air molecules.
• Secondary Rainbow is formed due to total internal reflection.
• Kirchoff's law: Emission and absorption of light by a substances.
• Electromagnetic theory of light: Maxwell.
• Quantum theory: Max Plank.
• Wave theory of light: Hygens.
• Colder part surrounded by sun: Chromosphere.
• Central part of the Sun: Photosphere.
• Brewster's Law: Polarisation of light.
• Colour of thin films: Interference.
• Band spectrum is produced by H2
• Red colour has the largest wave length.
• Dispersion of light was discovered by Newton.
• Blue colour has the smallest wave length.
• Due to total internal reflection the soap bubble shines.
• Due to Refraction the clear water well appears less deep.
• The number of images of an object placed between two parallel mirror is infinite.
• The unit of power of a lens is dioptre.
• Light waves are transverse.
• The unit of brightness is lambert.
• The coin the water appears to be risen is due to refraction.
• The stick in the water appears to be bent due to refraction.
• Presbyopia: Person should use convex lens.
• Rainbow: Total internal Reflection & Refraction.
• Zoom lens is a compound lens.
• The unit of luminous flux: Lumen.
• The picture in the television is 30 times per second.
• The concept of positive and negative charge was discovered by Benjamin Franklin.
• Charge of electron: e = 1.6021917 x 10-19
• Unit of potential difference is volt.
• Unit of resistance is ohm residential.
• Electrification is parallel connections.
• Fleming's left hand rule Electric Motor.
• Fleming's right hand rule Electric generator.
• Faraday's law - Electromagnetic induction.
• Lenz's law: Direction of induced current.
• Thumb rule: Direction of North pole of a needle.
• Ampere's swimming rule: Direction of deflection
• Maxewell cork Saew rule: Direction of magnetic lines of force.
• Gold leaf Electroscope - To defect the presence of electric charge of a body.
• Nucleus: Protons + Neutrons
• Radius of the nucleus is 10-14m.
• Atomic number: Number of protons in the nucleus.
• Nucleons: Either a neutron (or) a proton.
• Boltzmann constant: K= 1.38 x 10-23Jule/Ko
• Elementary charge: E= 1.60 X 10-19 coulomb
• Constant: G=6.67x 1O-11m2/kg2
• Permittivity constant: E=8.85x 10-12 fraud/mts.
• Electron charge: e/me=1.76x1011 coulomb/kg
• Electron rest mass: Me=9.11 x 10-31 kg
• Speed of light: C=3.00X108 meter/Sec
• Proton vest mass: m= 1.67239 x 10-27 kg
• Stefan Boltzmann Constant: Ïƒ =5.67X10-8 wart/met2
• Latent heat of fusion of ice in SI: -3.36X105 jkg-1
• One micron:  10-6m
• Density : Gold = 19.103 kg/m3, Ice = 0.9X103 kg/m3, Iron=7.8X103 kg/m3, Mercury=13.6X103 kg/m3, Water=1X103 kg/m3.
• Anatomy: Science of animal body structure.
• Archaeology: Study of ancient civilisations from the ruins of old buildings and monuments.
• Astrology: Art of prediction by analysing the effect of heavenly bodies upon the destiny of man.
• Astronomy: Science of the heavenly bodies. It is the Scientific study of the magnitude, motion, relative positions and all connected phenomena of heavenly bodies.
• Acoustics: The Science of sound, transmission, its production and its effects .
• Astrophysics: A branch of astronomy concerned with the Physical nature and composition of stars.
• Biochemistry: The study of the chemical or physicochemical processes and products involved in the life phenomena of plants and animals.
• Cosmography: Description, mapping of general features of the Universe or earth.
• Entomology: Study of insects.
• Embryology: Science of the womb.
• Etymology: Part of linguistic science concerned with facts relating to formation and meaning of words.
• Gynaecology : The branch of medicine that is concerned with the diseases singular to women, specially of the genital tract and its structure and glands concerned with it.
• Genetics: The study of heredity of individuals.
• Geophysics: Science dealing with the properties of matter and energy which. brings about changes in the earth's surface.
• Geology: Science of earth's crust, its strata and their relations and changes.
• Horticulture: Art of garden cultivation.
• Hydropathy : Medical treatment by external and internal application of water.
• Hydroponics: Study of raising of plants on water, without the help of soil.
• Hydrodynamics: Scientific study of the forces exerted by liquids.
• Hello therapy: Use of sun-baths in healing diseases.
• Hydrography: Scientific study of the water bodies of the earth.
• Hydroponics: Detection of sound under water.
• Metallurgy: The branch of science dealing with the method of extraction of metals from their ores & preparation of alloys.
• Meteorology: Science of weather and climate.
• Mycology: Study of fungi.
• Numismatics: Study of coins or coinage.
• Ornithology: Scientific study of birds.
• Pathology: Science of bodily diseases.
• Paleobotany: Science of the fossils of plants.
• Physiography: The study of the physical features of the earth, their causes and their relation to one another.
• Phycology : Science of dealing with the study of human mind.
• Pisciculture : Art of rearing fish.
• Seismology: Scientific study regarding earthquakes.
• Sericulture: Study of silk worm breeding.
• Toxicology: The science that treats the origin, nature, properties, and effects of poisons, of their detections in the organs and tissues, and of the treatment of diseases due to poisoning.
• Astronomical: 93,000,000 miles.
• Decibel: Unit of relative loudness. 1 decibel is the minimum amount of change detectable by the human ear.
• Hertz : Modern unit for measurement of electromagnetic wave frequencies (equivalent to "Cycles per second").
• Horse power: The amount of power needed to lift 33,000 pounds a distance of one foot in 1 minute.
• Light year: 5,880,000,000,000 miles or the distance that light travels in a year at the rate of 186,281.7 miles per second. (It an astronomical unit were represented by one inch a light year would be presented by about one mile). Used for astronomical measurements.
• Ohm: Unit of electrical resistance. A resistance of one ohm in the circuit with a potential difference of one volt produces a current of one ampere.
• Quintal: 1000,000 grams or 220.46 pounds avoirdupois.
• Roentgen: Dosage unit of radiation exposure produced by X-rays.
• Angstrom : An instrument used for measuring the length of light waves.
• Carat: 200 milligrams or 3.0088 grains troy. Used for weighing precious stones. Also a measure of the purity of gold alloy.
• Fathom (faith) : 6 feet or 1.8288 m. Derived from the distance to which a man can stretch his arms used for measuring cables and depths of water.
• Knot: The rate of speed of one nautical mile per hour. Used for measuring the speed of ship.
• Micron : 0.001 millimeter. Used for scientific measurement.
• Quire : Used for measuring paper. Sometimes a quire amounts to 24 sheets but more often 25; 20 quires constitute a ream.
• Acre: An area of 43000 square feet. Originally the area a yoke of oxen could plough in one day.
• Ampere: Unit of electric current. A potential difference of 1 volt across a resistance of one ohm produces a current of one ampere.
• Click for Part I
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