CBSE ENGLISH LANGUAGE LITERATURE

CLASS 9

A TRULY BEAUTIFUL MIND

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In E=mc2, E means?
A
Centimetres
B
Energy
C
Mass
D
Light
Explanation: 

Detailed explanation-1: -E = mc2. It’s the world’s most famous equation, but what does it really mean? “Energy equals mass times the speed of light squared.” On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing.

Detailed explanation-2: -In the equation, E = m c2, E stands for energy, m stands for an object’s mass, and c2 represents the speed of light ( 186, 000 miles per second ) multiplied by itself. Think of mass as simply the quantity of matter present.

Detailed explanation-3: -E, or energy, which is the entirety of one side of the equation, and represents the total energy of the system. m, or mass, which is related to energy by a conversion factor. And c2, which is the speed of light squared: the right factor we need to make mass and energy equivalent.

Detailed explanation-4: -E = Energy. m = Mass. c = Speed of light. from the Latin term celeritas, which means “speed"

There is 1 question to complete.