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When an electromagnetic wave passes through a medium , then frequency remains unchanged. The speed of electromagnetic wave inside a medium is given by, v=(1/µe)0.5where,µ is permeability...
let the radius of circle be r then equation of circle (x-2) 2 +(y-1) 2 =r 2 x 2 +y 2 -4x-2y+5-r 2 =0...................1 x 2 +y 2 -2x-6y+6=0........................2 common chord of circle 1 & 2 s...
The bending of light is called refraction. Refraction occurs as light passes across the boundary between two media when it encounters a new medium or an obstacle in its path. The transmission of light...
Physics- HC Verma and IE Irodov Mathematics- ML khanna and Arihant Chemistry- Ncert has enough concepts