Refraction through a Prism
 1) On what factor or factors does the angle of deviation depend? The angle of incidence. Angle of refraction The material of the prism. All of these

 2) How many refractions occur when a ray of light passes through a triangular prism? 4 3 1 2

 3) Which one of following is true at minimum deviation? Light travels inside the prism perpendicular to the base of the prism. Light travels inside the prism parallel to the base of the prism. Angle of incidence > Angle of emergence.

 4) If the angle of a prism is 60° and the angle of minimum deviation is 37.2°, what will be the refractive index of the prism? 1.6 1.5 1.55 1.7

 5) The bending of a beam of light when it passes obliquely from one medium to another is known as _______. Reflection Dispersion Refraction Deviation

 6) What is the angle of a prism? The angle between the incident ray and normal line. The angle between the emerging ray and normal line The angle between the two refracting surfaces of the prism. None of these.

 7) Which one of the following equations correctly represents Snell’s Law? n= [sin (A+D)/2]/[sin(A/2)] n = sin D/ sin r n= sinA/ sinr n= sin i/sin r

 8) If the angle of a prism is 60° and the angle of minimum deviation is 56.5°, what will be the refractive index of the prism? 1.5 1.7 1.55 1.65

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