Q1. The path of ray of light in different media of refractive indices n1, n2, n3 and n4 is shown in the gure. In which medium the velocity of light will be maximum? Q2. An object of height 5 cm is placed 25 cm in front of a bi-convex lens with a focal length of 10 cm. What is the height of the image? Q3. A ray of 610 nm light goes from air into fused quartz at an incident angle of 55. At what incident angle must 470 nm light enter int glass to have the same angle of refraction? Q4. If you approach a plane mirror at 1 mfs, how fast do you and your image approach one another? Q5. The radius of curvature of a spherical convex mirror is 40.0 cm. Determine the position and magnication of the virtual image of an object that is located 30.0 cm from the mirror