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Two plane mirrors are inclined at an ang...

Two plane mirrors are inclined at an angle of `72^(@)` . The number of images of a point object placed between them will be

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(a) Four images, (b) `150^(@), 210^(@), 250^(@), 310^(@)`
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RESNICK AND HALLIDAY-GEOMETRICAL OPTICS : REFLECTION -PROBLEMS
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