When the object moves with the speed of light its mass would be?

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When the object moves with the speed of light its mass would be? Answer: infinite

According to Einstein’s theory of relativity, as an object’s speed approaches the speed of light (c), its relativistic mass increases and tends toward infinity. This is described by the formula: ​Where: 𝑚 0 m 0 ​ is the rest mass, 𝑣 v is the velocity of the object, 𝑐 c is the speed of light. At 𝑣 = 𝑐 v=c, the denominator becomes zero, and mass becomes infinite, which implies it would take infinite energy to reach or exceed the speed of light — hence it's impossible for any object with mass.

Question context

This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.