find the angle between two Mirrors if the number of images formed is 9
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answer : 36°
explanation : The number of images formed between two plane mirrors inclined at an angle θ to each other is given by formula, n = (360/θ) - 1.
case 1 : when (360/θ) is an even integer then number of image formed , n = (360/θ) - 1.
case 2 : if (360/θ) is an odd integer and object is kept symmetrically.
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