② Combined with Figure B, there are: Sini = Dr
∴ Incident angle: I = Arcsindr?
By refraction law: sinisinr = n?
∴ Refraction angle r = Arcsindnr
Answer: ① As shown in the figure;
(2) The incident angle and refraction angle of this beam of light entering the water drop from the air are arcsindR and arcsindnR respectively. ..