A : Food is cooked faster by microwaves than by conventional gas burner.
R : Microwaves have more energy than heat waves.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)
C. If assertion is true statement but Reason is false, then mark (3)
D. If both Assertion and Reason are false statements, then mark (4)

Answer

To solve the assertion-reason question, we need to analyze both statements and determine their validity and relationship.

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**:
- The assertion states that "Food is cooked faster by microwaves than by a conventional gas burner."
- This is true because microwaves penetrate food and excite water molecules, leading to faster cooking compared to the heat transfer from a gas burner, which primarily heats the surface of the food.

2. **Understanding the Reason (R)**:
- The reason states that "Microwaves have more energy than heat waves."
- Here, it is important to clarify what is meant by "heat waves." In the context of electromagnetic waves, heat is often associated with infrared (IR) radiation. Microwaves have a higher frequency and therefore more energy than infrared waves.

3. **Evaluating the Relationship**:
- The assertion is true as microwaves do cook food faster.
- The reason is also true because microwaves indeed have more energy than infrared waves (heat waves).
- Furthermore, the reason provides a correct explanation for the assertion, as the higher energy of microwaves contributes to their effectiveness in cooking food quickly.

4. **Conclusion**:
- Both the assertion and the reason are true, and the reason is the correct explanation for the assertion.

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

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