Two frames S and S"; S" is traveling at a velocity v along the +x axis of frame S. A rod, of length L as measured in its rest frame S, subtends an angle with x axis in frame S.The angle subtended by the rod and the x” axis in frame S" is - (here v c)
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Explanation:
In the frame S", the rod will appear to be shorter in the direction of motion and subtend a smaller angle with the x" axis. This is known as length contraction and angle contraction, which are effects of special relativity. The angle between the rod and the x" axis in frame S" will be given by - (v/c) times the angle between the rod and the x axis in frame S.
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