(A) : In micro wave oven the energy is not wasted in heating up the vessel. (R) : The principle of microwave oven is to generate microwave radiation with magnetron source of appropriate freque­ncy in the work space of the oven where we keep food.

Options

A. Both 'A' and 'R' are true and 'R' is the correct explanation of 'A'.
B. Both 'A' and ’R' are true and 'R' is not the correct explanation of 'A
C. A' is true and 'R' is false
D. 'A' is false and R' is true

Answer

To solve the given question, we need to analyze both the assertion (A) and the reason (R) provided in the context of a microwave oven.

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**:
- The assertion states that in a microwave oven, the energy is not wasted in heating up the vessel. This means that the microwave oven is designed in such a way that it primarily heats the food inside it rather than the container holding the food.

2. **Understanding the Reason (R)**:
- The reason states that the principle of the microwave oven is to generate microwave radiation with a magnetron source of appropriate frequency in the workspace of the oven where food is kept. This explains how microwave ovens work by producing microwaves that specifically target the food.

3. **Evaluating the Truth of Assertion (A)**:
- The assertion is true because microwave ovens are designed to heat food efficiently by using microwave radiation, which is absorbed by the food and not by the vessel, minimizing energy loss.

4. **Evaluating the Truth of Reason (R)**:
- The reason is also true as it accurately describes the working principle of microwave ovens. The magnetron generates microwaves that are of a frequency suitable for heating food.

5. **Determining the Relationship Between A and R**:
- Since both the assertion and reason are true, we need to check if the reason correctly explains the assertion. The reason does explain why the energy is not wasted in heating the vessel, as it highlights the mechanism of how microwaves specifically target food.

6. **Conclusion**:
- Both the assertion and the reason are true, and the reason provides a correct explanation for the assertion. Therefore, the answer is that both A and R are true, and R is the correct explanation of A.

### Final Answer:
Both assertion (A) and reason (R) are true, and R is the correct explanation of A.

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