समय विस्फारन (Time Dilation) के लिए सही गणितीय व्यंजक की पहचान करें, जहां t0 = उचित समय (observer के सापेक्ष स्थिर घड़ी पर समय अंतराल), t = सापेक्ष समय (observer के सापेक्ष गतिशील घड़ी पर समय अंतराल), v = सापेक्ष गति की गति, और c = प्रकाश की गति है:

A globe of rest radius R0, carrying identifiable surface markings, moves with speed v in a direction perpendicular to the line joining it to a distant observer. A photograph is taken when the globe is exactly at the position of closest approach. After developing the film, what will the observer see?

An atom emits light of angular frequency ω0 in its own rest frame. The atom moves with speed v along the line joining it to a stationary observer. Which option correctly gives the observed angular frequency ω when the motion is directly away from or towards the observer?