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When several transparent materials are kept above each other, the resultant...

When light falls on a object, three things happen – A part of the light is absorbed Another part is reflected ad The remaining part is transmitted. A transparent medium transmits most of the light...

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Communication Systems : Revision Test

One mark questions What is the meant by the term attenuation ? Why ground wave transmission is restricted to 1500 kHz? Define critical frequency in sky wave propagation. What type of modulation is...

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SET OF MUST PRACTICE QUESTIONS FOR CBSE PHYSICS CLASS XII (AISSCE PHYSICS 2011)

Hello Dear Students, If you were searching for a set of questions which you cannot afford to leave while preparing for AISSCE 2011 Physics Exam, Here it is. Please practice them carefully. If you have...

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