Question

Which of the following is not the unit of energy?

• A. Electron-volt
• B. Joule
• C. Newton-metre
• D. Pascal

Hint:

Energy units include Joule, eV, calorie, etc. Pressure unit = Pascal (Pa).

Answer 1

The Correct Option is D

Step 1: Verify each choice.
- Electron-volt (eV): Unit of energy (1 eV = \(1.602 \times 10^{-19}\) J).
- Joule (J): SI energy unit (\(1\,J = 1\,N \cdot m\)).
- Newton-metre (N·m): Equivalent to Joule, thus an energy unit.
- Pascal (Pa): Pressure unit (\(1 \, Pa = 1 \, N/m^2\)).
Step 2: Conclusion.
Therefore, Pascal is not a unit of energy.
Final Answer: \[ \boxed{\text{Pascal}} \]