the radius of curvature of spherical surface is R and reflective index is μ An object is placed at distance u from it .If the image formed by reflection is at distance v ,then relation μ-1/R = μ/v - 1/u is true for any surface.
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. If x = 2/3 and x = -3 are the roots of the equation ax? + 7x + b = 0, find the values of a
and b.
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