Question

in the first figure i2>i1 (i1= angle of incidence and i2=angle of emergence)but in the second both are i1 .in the first figure i1=i2 and in the second figure i1=i2 how they became same and equalised.plz help me.write the correct answer or else u will be reported​

Answer 1

Answer:

The incident ray after refraction comes out from the prism as an emergent ray. The rays where they are perceived to meet is called the angle of deviation ( angle A) .

Answer 2

Explanation:

because in this figure the angle of deviation becomes the angle of minimum deviation.

because in this figure the angle of deviation becomes the angle of minimum deviation.because in the first figure the angle of incidence is less than the angle of emergence and the i1 Ray is not parallel to the base of the glass slab.

because in this figure the angle of deviation becomes the angle of minimum deviation.because in the first figure the angle of incidence is less than the angle of emergence and the i1 Ray is not parallel to the base of the glass slab.but in the second one the i1 Ray is parallel to the base of the slab. so in the second one angle of deviation becomes angle of the minimum deviation. because deviation decreased.

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