You are using a light clock in a moving, transparent train. The velocity of the

Question

You are using a light clock in a moving, transparent train. The velocity of the train, and you and your clock, is constant. Your clock measures time by generating pulses of light that strike both sides of the rail car at the same time. However, your friend observes you and your clock passing by them. When you and your friend talk later they claim that your clock's pulses did not reach the front and back of the car at the same time. Which of the following conclusions are correct. a. You disagree on the results because the speed of light is different for each of you. b. You disagree because you are both in difference reference frames. However, you both agree on the speed of light. c. The difference of opinion is because of different reference frames. d. You both agree on the speed of light.

Explanation / Answer

Speed of light remains same for all inertial refrence frames : a postulate of special relativity.

C: Difference in opinion is due to different refrence frames.

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