Event 2 occurs a time $\Delta$t after event 1.If event 2 was caused by event 1,which of the following must be true?
A) The distance between event 1 and event 2 can be any amount.
B) The distance between event 1 and event 2 is not more than c $\Delta$t.
C) There are frames of reference in which event 2 is before event 1.
D) There are frames of reference in which event 1 is not related to event 2.
E) All of these choices are false.

Question

Quizplus · Accepted Answer

According to the theory of relativity, the maximum speed at which information can be transmitted is the speed of light (c). Therefore, if event 2 is caused by event 1, the distance between event 1 and event 2 cannot be greater than the speed of light multiplied by the time interval â^†t. Hence, choice B is true, whereas choices A, C, and D are incorrect. Option E is also incorrect, as choice B is true.

Event 2 Occurs a Time Δ\DeltaΔ T After Event 1 Δ\DeltaΔ T C) There Are Frames of Reference in Which Event

Event 2 Occurs a Time $\Delta$ T After Event 1 $\Delta$ T
C) There Are Frames of Reference in Which Event