4. Use a diagram to show what happens when a ray of light passes through a rectangular slab of glass.
Answers
Answer:
fix a sheet of white paper on a thick piece of cardboard place a rectangular slab of glass on the paper and trace its outline with a shepherd pencil remove the slab and draw a line ab at an angle to one of the longer sides of the rectangle fixed to pins P1 and P2 on the line put the slap back on its outline close one eye and look at the prince from the other side of the slab move your head side days until the image appear inline fix to more p3 and p41 behind the other line with the images of the P1 and p 2 remove the slab and the pins draw the lines CD through the points marking the positions of p3 and P4 join BC this is obviously the path taken by the rate of light through the slab draw normal at b and c and major the angles of incidence and refraction at the boundaries of class and air we will notice that angle I is equals to angle r and angle r is equals to angle I the angle r is called the angle of emergence and CD is the emergent ray does the incident ray and emergent rays are parallel we can then conclude that when a Ray of light passes through a rectangular flag of glass it emergences parallel to and shifted from its original path.
Explanation:
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