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Why is (c) squared in (E=mc^2)?

Answer and explanation

Correct answer: Because the square of the speed of light is used in the equation

The correct answer is A. In E = mc², the symbol c represents the speed of light in vacuum, and the mathematical relationship specifically uses its square, c². This square is not decorative; it is essential to the quantitative relation between mass and energy. Since the speed of light is a very large number, squaring it explains why even a small amount of mass can correspond to an enormous amount of energy. The letter c does not mean colour in this equation, and it does not represent the speed of sound. Thus option A correctly identifies both the symbol and the operation applied to it.

Related tags

E=Mc²Speed Of LightFormulaBiography Of Albert EinsteinA Truly Beautiful MindEnglishClass 9 Mcq

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