Suppose the time taken for light to bounce to and fro between the parallel mirrors of a light clock is 1 second,in the frame of reference of the light clock.As seen by another observer moving at high speed at right angles to the to-and-fro motion of the bouncing light,the time taken would be
A)also 1 second.
B)less than 1 second.
C)more than 1 second.

Question

Quizplus · Accepted Answer

According to the theory of relativity, time appears to slow down for objects in motion relative to an observer. This effect is known as time dilation. As such, the observer moving at high speed relative to the light clock will perceive time as moving more slowly than the observer at rest relative to the clock. This means that the time taken for the light to bounce back and forth will appear to take longer than 1 second, so the correct answer is C) more than 1 second.

Suppose the Time Taken for Light to Bounce to and Fro