The proper time between two events is measured by click at rest in a reference frame in which the two events
a)occurs at the same time
b)occurs at the same coordinates
c)are separated by distance a light signal can travel during time interval
d)satisfy none of above
Please explain
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A space-time interval of zero onlyoccurs when the velocity is c (if x>0). All observers observe the same space-time interval so when observers observe something with a space-time interval of zero, they all observe it to have a velocity of c, no matter how fast they are moving themselves
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Explanation:
option c is answer❣️❣️❣️❣️❣️
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