7. If a real object is placed just inside the focal point of a converging lens, the image is A. real, inverted, enlarged C. virtual, upright, enlarged B. virtual, upright, reduced D. real, inverted, reduced 8. You are looking at an object submerged to a medium of n > 1. How does the object appearto you? A. Same size but farther than it actually is. B. Same size but closer than it actually is. C. Same distance but smaller than it actually is. D. Same distance but larger than it actually is. 9. A positive magnification greater than unity indicates A. real image C. neither real nor virtual image B. virtual image D. distorted image For Numbers 8-10. One end of a cylindrical glass rod is ground to a hemispherical surface of radius R = 20 mm. The rod is in air. 10. Find the image distance of a point object on the axis of the rod, 80 mm to the left of the vertex. A. - 40 mm C. +120 mm B. 0.02 cm D. 0.013 cm 11. Which of the following is NOT true about the area A, in the Gauss's Law formula? A. The surface area, A, must be a closed surface. B. The surface area, A, mustbe highly symmetrical surface like a sphere or a cylinder. C. The surface area, A, must contain all the charges involve in a problem D. The normal to the surface area, A, mustbe perpendicular to the direction of the electric field. 12. A solid sphere conductor has a charged -q. This charge is A. concentrated at the center of the sphere B. partially distributed at the inner part of the sphere C. distributed throughout the sphere D. distributed only at the surface of the sphere