A : Microwaves are commonly used in radar to locate flying objects.
R : Microwaves have-smaller wavelength than radiowaves.

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 analyze the given statements, we will break down the assertion (A) and the reason (R) step by step.

**Step 1: Understanding the Assertion (A)**
- The assertion states that "Microwaves are commonly used in radar to locate flying objects."
- Radar, which stands for Radio Detection and Ranging, uses electromagnetic waves to detect and locate objects.
- Microwaves are indeed commonly used in radar systems due to their ability to penetrate the atmosphere and provide accurate distance measurements.

**Step 2: Understanding the Reason (R)**
- The reason states that "Microwaves have a smaller wavelength than radiowaves."
- Electromagnetic waves are categorized based on their wavelengths. Microwaves have wavelengths ranging from about 1 mm to 1 m, while radio waves have longer wavelengths, typically from 1 m to several kilometers.
- Therefore, this statement is also true.

**Step 3: Evaluating the Relationship Between A and R**
- Both the assertion and the reason are true.
- Additionally, the reason (R) provides a valid explanation for the assertion (A). The smaller wavelength of microwaves allows for better resolution and accuracy in radar systems, making them more effective for locating flying objects.

**Conclusion:**
- Both the assertion and the reason are correct, and the reason explains the assertion.

**Final Answer:**
- The answer is option 1: Both A and R are true, and R is the correct explanation of A.

---