The law regarding the conversion of mass into energy was given by

Options

A. Rutherford
B. Einstein
C. Currie
D. Bohr

Explanation

To solve the question regarding the law of conversion of mass into energy, we can follow these steps:

### Step 1: Identify the Key Concept
The question asks about the law that describes the conversion of mass into energy. This concept is fundamental in physics and chemistry.

**Hint:** Think about famous equations that relate mass and energy.

### Step 2: Recall the Famous Equation
The most well-known equation that relates mass and energy is Einstein's equation:
\[ E = mc^2 \]
where:
- \( E \) is the energy,
- \( m \) is the mass,
- \( c \) is the speed of light in a vacuum (approximately \( 3 \times 10^8 \) meters per second).

**Hint:** This equation shows how mass can be converted into energy and vice versa.

### Step 3: Identify the Contributor
This equation was formulated by Albert Einstein, who is a prominent figure in the field of physics.

**Hint:** Consider who is known for groundbreaking theories in physics, especially those related to relativity.

### Step 4: Conclusion
Thus, the law regarding the conversion of mass into energy was given by Albert Einstein.

**Final Answer:** The law regarding the conversion of mass into energy was given by Albert Einstein.

### Summary of Steps:
1. Identify the key concept of mass-energy conversion.
2. Recall the equation \( E = mc^2 \).
3. Recognize Albert Einstein as the contributor of this equation.
4. Conclude the answer.