1) 1.What is the condition for minimum deviation in a prism? a) A. Angle of incidence = 0° b) B. Angle of incidence = angle of emergence c) C. Refracted ray is parallel to base d) D. Incident and emergent rays are perpendicular 2) Which instrument is best for measuring prism deviation accurately? a) A. Vernier caliper b) B. Spectrometer (optical bench with telescope) c) C. Ammeter d) D. Stopwatch 3) Angle of deviation depends on: a) A. Angle of incidence only b) B. Refractive index and prism angle only c) C. Angle of incidence, prism angle and refractive index d) D. None of the above 4) To reduce error due to dispersion you should use: a) A. White light b) B. Monochromatic source (e.g., sodium lamp) c) C. Sunlight through a window d) D. LED of multiple wavelengths 5) Which of the following increases the refractive index of a given prism material? a) A. Increasing wavelength (red light) b) B. Decreasing wavelength (blue/violet light) c) C. Increasing prism temperature (always) d) D. Increasing the apex angle A (always) 6) What happens to the angle of deviation as the angle of incidence increases from a small value 300 to 600 a large value ? a) A) It continuously increases. b) B) It continuously decreases. c) C) It first decreases to a minimum and then increases. d) D) It remains constant throughout 7) The angle of the prism (A)used in the standard experiment is usually a) 300 b) 600 c) 450 d) 500 8) Which color of light deviates the most when passing through a prism? a) A) Red b) B) Green c) C) Yellow d) D)Violet 9) At the condition of minimum deviation, what is the relationship between the i & e a) i=e b) i>e c) i<e d) i= e+A

JKC 11 Physics Experiment No. 9: Refractive Index of Prism

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