If the index of refraction of a material is 2. this means that light travels 2 t
ID: 1510285 • Letter: I
Question
If the index of refraction of a material is 2. this means that light travels 2 times as fast in air as it docs in vacuum. 2 times as fast in the material as it docs in air. 2 times as fast in vacuum as it docs in the material. 2 times as fast in the material than it docs in vacuum. 1/2 as fast in air as it docs in the material. Light enters air from water. The angle of refraction will be greater than the angle of incidence. equal to the angle of incidence. less than the angle of incidence. The critical angle for a beam of light passing from water into air is 48.8degree. This means that all light rays with an angle of incidence in the water that is greater than 48.8degree will be totally absorbed by the water. totally reflected. partially reflected and partially transmitted. totally transmitted. A candle is 49.0 cm in front of a convex spherical mirror of radius of curvature 70.0 cm. What arc the image distance and the magnification, respectively -20.4 cm,+0.417 +20.4 cm. -0 417 +122.5 cm.+2.50 -20.4 cm.-0.417 Which one of the following numbers is the correct magnification produced by a plane mirror 1/2 1/4 2 1 3/2 Suppose you place an object in front of a concave mirror. Which of the following statements must be true (There could be more than one correct choice.) The image of the object will always be smaller than the object. No matter w here you place the object, a real image of the object will be formed. The image of the object will always be inverted. If you position the object between the mirror and the focal point of the mirror, its image must be upright and virtual. No matter w here you place the object, the image of the object will always be virtual and upright.Explanation / Answer
1)C
2)A
3)B
4)A
5)D
6)D