A=29 B=39 C=139 D=12 A = B= C=_ D= Will be graded: 1. A light ray strikes a water/unknown surface at an angle of D degrees with respect to the normal. Find the angle of refraction when the direction of the ray is from water to unknown media. The refractive index of water is 1.33 and for the unknown is C/100. (20 points) 2. An object is placed D cm from a B cm focal length converging lens. Determine the image position, size and orientation? a) analytically b) Using ray diagram. (20points) 3. An object is placed D/2 cm from a B cm focal length concave mirror. Determine the image position, size and orientation? a) analytically b) Using ray diagram. (25points) Do for practice and earn (25 points) for completion: 4. A beam of light travelling through water (n=1.33) strikes a piece of glass (n=1.5) at an incident angle 0 as shown in the Figure. What is the minimum angle 0 (in degrees) such that the light will not reach the air (n=1) on the other side of the glass? Water n1 = 1.33 Glass n2 = 1.5 Air n3 = 1.0 5. An object B/10 cm tall is located D/5 cm in front of a mirror. If the mirror produces a 3 cm-tall upright image what kind of mirror is this and what is the magnitude of its radius of curvature? 6. An object placed in front of a spherical mirror with focal length f= -B cm produces an image with a magnification m = D/10. If the object is placed the same distance in front of a spherical mirror with focal length f = B cm, what Dr. Hetti PHY 156 happens to the image? 7. An object is placed D cm from a B cm focal length converging lens. Determine the image position, size and orientation? a) analytically b) Using ray diagram. 8. An object is placed D cm from a B cm focal length diverging lens. Determine the image position, size and orientation? a) analytically b) Using ray diagram. 9. A light bulb is placed B cm from a concave mirror having a D m focal length. Use ray tracing to get an approximate location for the image. Then use the lens equations to calculate (a) the location of the image and (b) its magnification. Solve the problem for convex mirror