Question

What is the law of conservation of energy?
A. Energy can neither be created nor destroyed. It can only be transformed from one to another.
B. Energy can neither be created nor destroyed. It can only be transformed from one to another.
C. Energy can neither be created but can be destroyed. It can only be transformed from one to another.
D. None

Answer 1

Hint: In order to answer this question, first we will mention the correct option for the given question, by explaining the concept of law of conservation of energy.And then we will discuss much more about the law of conservation of energy.

Complete answer:
According to the law of conservation of energy: energy can neither be created nor destroyed. It can only be transformed from one to another. The evolution of living forms on Earth necessitates the use of energy. It is defined as the ability to perform work in physics. We know that energy occurs in nature in various forms. You've learnt about several types of energy, such as heat, electricity, chemical energy, nuclear energy, and so on. We will study the rules and concepts that control energy in this essay. The law of conservation of energy is the name given to this rule.

Energy cannot be created or destroyed, according to the rule of conservation of energy. It can, however, be changed from one form to another. The overall energy of an isolated system remains constant when all forms of energy are considered. The law of conservation of energy applies to all kinds of energy. In a nutshell, the rule of conservation of energy asserts that the total energy of a closed system, that is, one that is separated from its surroundings, is conserved.

If there is a loss of energy in one area of an isolated system like the cosmos, there must be a gain of energy in another section of the universe. There is no known case of the principle of energy conservation being violated, despite the fact that it cannot be proved.
The amount of energy in any system is determined by the following equation:
\[{U_T} = {U_i} + W + Q\]
where, ${U_T}$ is the total energy of a system, ${U_i}$ is the initial energy of a system,$W$ is the work done by the system and $Q$ is the heat added or removed from the system.
The change in the internal energy of the system is determined using the equation:
$\therefore \Delta U = W + Q$

Hence, the correct option is A.

Note: Most inventions in physics are based on the fact that energy is conserved when moved from one form to another. Several electrical and mechanical devices function entirely on the principle of energy conservation.