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.
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- 24) When light goes from one material into another material that has a lower index of refraction, A. its speed, wavelength, and frequency all increase. B. its speed increases but its frequency and wavelength stay the same. C. its speed decreases but its wavelength and frequency both increase. D. its speed and wavelength increase, but its frequency stays the same. E. its speed increases, its wavelength decreases, and its frequency stays the same. 25) To focus light to a spot of the smallest possible width, you should choose a lens with A. The smallest focal length and the largest diameter B. The largest focal length and the largest diameter C. The smallest focal length and the smallest diameter D. The largest focal length and the smallest diameter 26) An opera singer in a golf cart is singing a note at 780 Hz while traveling down a road at 30 m/s. What is the frequency heard by a person standing on the side of the road with the golf cart heading away from them? Assume a speed of sound…What is the condition for Brewster's Angle? a) 90 degrees between incident and reflected rays. b) 90 degrees between incident and refracted rays. c) 90 degrees between reflected and refracted rays.4. Sunlight (unpolarised light) is reflected from Liverpool's Canning half-tide dock on a day where the water's surface is smooth and still. The water is salty, with a refractive index of 1.36. (i) For what angle of incidence is the reflected light completely polarised (Brewster angle)? (ii) At this incidence angle, what is the corresponding angle of refraction? (iii) How would your answers change if the sea water was replaced with fresh water?
- 6) A glass plate with an index of refraction of 1.57 is immersed in an oil having a refractive index of 1.40. What is the critical angle? and which path is the appropriate path for the light to travel for total internal reflection to occur? From oil to glass, or glass to oil? Explain.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. Which of following statement regarding non-linear optics is incorrect? A. Refractive index can depend on light intensity. B. Two light beams are independent and cannot control each other. C. It can produce second harmonic generation with light frequency doubled (2w). D. It can produce sum-frequency generation of two incident light beams (@3 = w1 + w2). %3D
- 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)2.-A triangular glass prism with apex angle Φ = 60 has an index of refraction of n = 1.50 (see Figure 1). What is the minimum angle of incidence θ1 at which a light ray can emerge from the other side?9. Consider a planar interface with the refractive index n, in the lefthand side and n2 in the right- hand side. Explain what are the boundary conditions needed to be satisfied and how the Snell's rule ni sin(0;) = n2 sin(0;) is derived from the boundary conditions.