Micro organisms Post author By Post date All Questions › Category: Secondary School › Micro organisms 0 Vote Up Vote Down SOPHIA KELVIN asked 3 years ago Is streptococcus pyogenes harmful to human beings? Read our disclaimer. AD: Take Free online baptism course: Preachi.com Related ← Micro oganisms → The angle of incidence of a narrow beam of light on a side of an equilateral triangular prism is 48°. Calculate the: angle of minimum deviation, angle of refraction and the refractive index of the prism