A beam of light that is parallel to the principlal axis isincident on a concave

Question

A beam of light that is parallel to the principlal axis isincident on a concave mirror. What happens to the reflectedbeam of light? A) it also is parallel to the principlal axis B) it passes between the focal point and the center ofcurvature of the mirror C) it is perpendicular to the principal axis D) it passes through the center of curvature of themirror E) it passes through the focal point of the mirror Why? A beam of light that is parallel to the principlal axis isincident on a concave mirror. What happens to the reflectedbeam of light? A) it also is parallel to the principlal axis B) it passes between the focal point and the center ofcurvature of the mirror C) it is perpendicular to the principal axis D) it passes through the center of curvature of themirror E) it passes through the focal point of the mirror Why?

Explanation / Answer

Answer : B it passes between the focal point and the center of curvatureof the mirror According to mirror formula 1/f =1/do +1/di. Where the beam oflight passes parallel through the principal axi means the object isat infinity and the image is at the focal point.

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