Albert Einstein was awarded Nobel Prize for his work on

Options

A. Special theory of relativity
B. General theory of relativity
C. Photoelectric effect
D. Mass-energy equivalence

Answer

**Step-by-Step Solution:**

1. **Understanding the Nobel Prize in Physics**: The Nobel Prize in Physics is awarded for significant contributions to the field of physics. It is important to know the specific work or discovery for which an individual was recognized.

2. **Identifying Einstein's Contributions**: Albert Einstein made several groundbreaking contributions to physics, including the Special Theory of Relativity, the General Theory of Relativity, the concept of mass-energy equivalence (E=mc²), and his explanation of the photoelectric effect.

3. **Reviewing the Options**: The question provides four options regarding the work for which Einstein was awarded the Nobel Prize:
- Option 1: Special Theory of Relativity
- Option 2: General Theory of Relativity
- Option 3: Photoelectric Effect
- Option 4: Mass Energy Equivalence

4. **Determining the Correct Answer**: Among the options, the correct answer is the Photoelectric Effect. Einstein's explanation of the photoelectric effect demonstrated that light can be understood as both a wave and a particle, which was a pivotal moment in the development of quantum theory.

5. **Conclusion**: Therefore, Albert Einstein was awarded the Nobel Prize for his work on the photoelectric effect.

**Final Answer**: Albert Einstein was awarded the Nobel Prize for his work on the Photoelectric Effect.

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