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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A light ray is incident on a plane mirror at an angle of 30 with the horizontal. At what angle with horizontal must a plane mirror be placed in its path so that it becomes vertically upwards after reflection?

A light ray is incident on a plane mirror at an angle of 30 with the horizontal. At what angle with horizontal must a plane mirror be placed in its path so that it becomes vertically upwards after reflection?

A woman is standing in front of a plane mirror. What is the minimum mirror height that is necessary for her to see her full image.