14. A steel wire is coaxially embedded in a glass tube, external diameter of which is much greater than that of the wire. Refractive index of the gl is 4/3. If diameter of the steel wire appears 8/3 mm when looked into the glass tube through its curved surface, find the actual diameter of the steel wire? 2 mm

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.