The India born and USA based Nobel Laureate Prof. Chandrasekhara is known for his work on

Options

A. Study of cosmic rays
B. Development of relativistic theory of electron
C. Prediction of tachyons
D. Stability of stars and existence of a stable mass limit for white dwarfs

Answer

To solve the question regarding the contributions of the Indian-born and USA-based Nobel Laureate Prof. Chandrasekhar, we can follow these steps:

### Step 1: Identify the Nobel Laureate
- The question mentions an Indian-born and USA-based Nobel Laureate named Prof. Chandrasekhar.

### Step 2: Analyze the Options
- The question provides four options regarding his work:
1. Study of cosmic rays
2. Development of relativistic theory of electron
3. Prediction of cations
4. Stability of stars and existence of a stable mass limit for white dwarfs

### Step 3: Evaluate Each Option
- **Option 1: Study of cosmic rays** - This is not associated with Prof. Chandrasekhar.
- **Option 2: Development of relativistic theory of electron** - This is also not correct.
- **Option 3: Prediction of cations** - This does not relate to his work.
- **Option 4: Stability of stars and existence of a stable mass limit for white dwarfs** - This is the correct answer.

### Step 4: Conclusion
- Prof. Chandrasekhar is known for his work on the stability of stars and the existence of a stable mass limit for white dwarfs, which earned him the Nobel Prize.

### Final Answer
Prof. Chandrasekhar is known for his work on the stability of stars and the existence of a stable mass limit for white dwarfs.

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