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Electrons and holes in semi-counductor Metals have free electrons available in conduction band for conduction of electric current. As the valence band overlaps the conduction b
Q. During lightning, it is safer to sit inside car than in an open ground. Why? The metal body of the car offers electrostatic shielding where the electric field is zero. Thro
Compound Microscope: It is an optical instrument by which very small object like as biological specimens are seen that cannot be seen by naked eyes. Compound microscope havi
Dispersion of Light: When a beam of light is permitted to pass by a prism, it splits in a band of different colors. This band of different colors is known as spectrum and the p
Solar Cells: The solar cells that we see on calculators and satellites are photovoltaic cells or modules (modules are easily a group of cells electrically connected and packaged
Factors on which Resistance Depends: Resistance of the conductor depends on the following factors. Nature of the conductor. Length of the conductor. Area of cross sect
Fusion Reaction: In nuclear fusion light nuclei are brought together to form a relation heavier nucleus. They energy free in nuclear fusion is larger than that free in fission.
A ring forming a magnetic circuit is made from two materials; one part is mild steel of mean length 25cm and cross-sectional area 4cm 2 , and the remainder is cast iron of mea
Explanation of formation of ring pattern system
What is the difference between blow holes and porosity
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