Question

Choose the correct answers from the alternatives given .
Which of the following describes the first law of thermodynamics?

• A. Energy is neither created nor destroyed, but it can change into matter
• B. Energy is neither created nor destroyed, but it can change from one energy form to another
• C. Some useful energy is lost as heat whenever an energy transfer occurs
• D. Energy transfers are always 100% efficient in changing energy from one useful form to another

Answer 1

The correct option is B Energy is neither created nor destroyed, but it can change from one energy form to another

The first law of thermodynamics says that energy can't be created or destroyed, but it can be changed. The law forms the basis of the principle of conservation of energy. This means that anything that uses energy is changing the energy from one kind of energy to another.

So, the correct option is 'Energy is neither created nor destroyed, but it can change from one energy form to another'.