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State Huygens' Principle. With the help of a suitable diagram, prove Snell's law of refraction using Huygens' Principle.
Magnification is the ratio of size of image to the size of object. hence it is a dimensionless constant. It has no units. 1/m is not its unit.(1/m is the unit of power=DIOPTRE)
Explain Spring Force (Fspring) Force exerted by a compressed or stretched spring upon any object that attached to it. An object that compresses or stretches a spring is always
describe an activity to show tath sliding friction is less than static friction
Steps of working of Unijunction Transistor (i) When emitter circuit is closed through switch S but emitter voltage is reduced to zero, and a voltage V BB is applied between
siemens; S (after E.W. von Siemens, 1816-1892): The derived SI unit of electrical conductance equivalent to the conductance of any element that contain a resistance of 1 O [oh
Explain about the Homojunction Laser in brief. Homojunction Laser: Assume that GaAs be doped with T providing n-type material and with Ge providing p-type material. In forwa
A simple theodolite or astrolabe A simple theodolite or astrolabe is formed by fixing a drinking straw to the base line of a protractor with sealing wax or glue. A plumb line h
What is the essential effect of a magnetic field? Answer: A magnetic field is an imperceptible entity that exists in a region of space that may be void of all matter in th
Constantan: Constantan is a copper-nickel alloy. The amount of nickel in constantan is 40%. Properties: 1. It is silver like appearance. 2. Its electrical res
When an earthquake occurs, two types of sound waves are generated and travel through the earth. The primary, or P, wave has a speed of about 7.5 km/s and the secondary, or S, wave
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