Draw a labeled ray diagram to show how a ray of light passes through a parallel sided glass block

(a) If it hits the glass block at 90° (that is, perpendicular to the glass block)


(b) If it hits the glass block at an angle other than 90° (that is, obliquely to the glass block).

(a) a labeled ray diagram of a ray of light that passes through a parallel sided glass block, if it hits the glass block at 90°


(b)a labeled ray diagram of a ray of light that passes through a parallel sided glass block, if ray of light hits the block other than the 90o



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