Light is refracted through a diamond. If the angle of incidence is 30°, and the angle of refraction is 12°, what is the index of refraction? а. 1.3 b. 2.4 с. 2.6 d. 1.8 е. 0.4
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A: n1sini=n2sinrwhere,n1 and n2 are refractive indicesi is angle of incidencer is angle of refraction
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- 4. A ray of light passes through a prism, making the minimum angle of deviation. The rays enter and emerge at 7° from the normal to the surface. What is the index of refraction of the material, if the prism angle is 50°?1) What does Brewster's angle give? a. The angle for maximum resolution. b. The angle for 100% polarization upon reflection. c. The minimum angle of deviation. d. The angle for total internal reflection.14. Hot air rises over a heated stove element.Explain why the wall behind the stove appears to shimmer. 15. The critical angle from rock salt into air is 40.5o. What is the index of refraction for rock salt. (1.54) 16. The critical angle for a certain liquid-air surface is 61o. What is the liquid's index of refraction? (1.14) 17.The refractive indices of diamond and crown glass are 5/2 and 3/2 respectively.What is the critical angle between diamond and glass? (37o)
- 6. A ray of light, emitted beneath the surface of an unknown liquid with air above it, undergoes total internal reflection as shown below. What is the index of refraction for the liquid and its likely identification? 13.4 cm. n₂ n₁ 15.0 cm1. A ray of light is passing through air (n=1). It strikes a level surface of water (n=1.33) at an angle of 40° with respect to the surface of the water. The water is 10 cm thick. The light ray refracts and travels through the water. There is a level layer of clear polystyrene (n = 1.6) that the water is resting upon. The light ray hits the polystyrene level and travels through it, finally reaching a sheet of glass (n=1.45). Given that the speed of light in a vacuum is 3 x 108 m/s, calculate the speed of light in the water and the time it takes for the light to traverse the water layer. (actual question i need answered) *Using the arrangement in Problem 1, calculate the critical angle for total internal reflection at the polystyrene-glass interface2. A small light source (point source) is located in water (nr 1.33) at a depth d below the surface. Determine (a.) the critical angle for total reflection of light at the water-air interface (b.) the depth of the light source if an observer above the water sees an illuminated circle of 3m radius.
- 7. Water has an index of refraction of about n = 1.3. If sunlight is hitting a lake surface at a 45 ° angle, what is the angle of the water rays inside the water?Consider a light ray that enters and exits a prism as shown below. Suppose the material of the prism is unknown but the surrounding material has index of refraction n, = 1.3. Find the index of refraction for the material of the prism. n2 n1 22° 38° 9. n, = А. 1.479 D. 1.586 В. 1.635 Е. 1.333 С. 1.389 F. 1.527A ray of light enters a flat surface of a block of glass (n=1.52) that is surrounded by water (n=1.33). If the refractive angle is 24.4°, what would be the angle of reflection? Select one: a. 28.17° b. 15.77° c. 18.10° d. 21.19°