In an experiment with rectangular glass slab, a student observed that a ray of light incident at an angle of 55 degree with the normal on one face of the slab, after refraction strikes the opposite face of the slab before emerging out into air making an angle of 40 degree with the normal. Draw labelled diagram to show the path of this ray. what value would you assign to the angle of refraction and angle of emergence ?

In an experiment with rectangular glass slab, a student observed that

1.	In an experiment with rectangular glass slab, a student observed that a ray of light incident at an angle of 55 degree with the normal on one face of the slab, after refraction strikes the opposite face of the slab before emerging out into air making an angle of 40 degree with the normal. Draw labelled diagram to show the path of this ray. what value would you assign to the angle of refraction and angle of emergence ?
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