physics

UKPCS-UKPSC Science: Conductors, semiconductors and insulators(1) #34

Oracle IAS, the best coaching institute for UPSC/IAS/PCS preparation in Dehradun brings to you UKPCS-UKPSC Science (paper #6). Classifying materials Materials can be placed into three groups according to their electrical resistance: conductors semiconductors insulators Insulators and pure semiconductors have a very high resistance, while conductors have a very low resistance. This difference in conduction is explained by electron …

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UKPCS-UKPSC Science: Telescope #33

Oracle IAS, the best coaching institute for UPSC/IAS/PCS preparation in Dehradun brings to you UKPCS Science (paper #6). A telescope is an important tool for astronomy that gathers light and directs it to a single point. Some do this with curved mirrors, some with curved lenses, and some with both. Telescopes make faraway things look bigger, brighter and …

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UKPCS-UKPSC Science: Microscope #32

Oracle IAS, the best coaching institute for UPSC/IAS/PCS preparation in Dehradun brings to you UKPCS Science (paper #6). A microscope is a scientific instrument. It makes things normally too small to be seen look larger. This way they can be seen better and examined correctly. People who use microscopes commonly in their jobs include doctors and scientists. Microscopes …

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UKPCS Science: Human Eye(3) #31

Oracle IAS, the best coaching institute for UPSC/IAS/PCS preparation in Dehradun brings to you UKPCS Science (paper #6). Defects of vision and their corrections: There are three common defects of vision. They are: 1) Myopia (Short-sightedness or Near-sightedness) 2) Hypermetropia (Long-sightedness or Far-sightedness) 3) Presbyopia Myopia

UKPCS-UKPSC Science: Electrical safety #28

Oracle IAS, the best coaching institute for UPSC/IAS/PCS preparation in Dehradun brings to you UKPCS -UKPSC Science (paper #6). Electricity can be hazardous. Insulation, earthing, fuses and circuit breakers help to protect us from electrical injury. Electrical energy is current multiplied by voltage and time. Insulators are used in electrical equipment to support and separate electrical conductors without …

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UKPCS Science: Electrical/power grid #27

Oracle IAS, the best coaching institute for UPSC/IAS/PCS preparation in Dehradun brings to you UKPCS Science (paper #6). An electrical/power grid is an interconnected network for delivering electricity from suppliers to consumers. It consists of generating stations that produce electrical power, high voltage transmission lines that carry power from distant sources to demand centers, and distribution lines that …

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UKPCS Science: Transformer#26

Oracle IAS, the best coaching institute for UPSC/IAS/PCS preparation in Dehradun brings to you UKPCS Science (paper #6). A transformer is an electrical device that takes electricity of one voltage and changes it into another voltage. A distribution transformer or service transformer is a transformer that provides the final voltage transformation in the electric power distribution system, stepping …

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