Assertion (A): Microwaves are considered suitable for radar system.
Reason (R): Microwaves are of shorter wavelength.

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 but R is false
D. A is false and R is true

Explanation

To solve the question regarding the assertion and reason provided, we will analyze both statements step by step.

### Step 1: Analyze the Assertion (A)
The assertion states that "Microwaves are considered suitable for radar systems."

- **Explanation**: Microwaves are indeed used in radar systems. They have properties that make them effective for this purpose, such as their ability to penetrate the atmosphere and their relatively high frequency, which allows for better resolution in detecting objects.

**Hint**: Consider the applications of microwaves in technology to understand their suitability for radar systems.

### Step 2: Analyze the Reason (R)
The reason states that "Microwaves are of shorter wavelength."

- **Explanation**: Microwaves have wavelengths in the range of about 1 mm to 1 m (or 10^-3 to 10^-1 meters). Shorter wavelengths correspond to higher frequencies, which is advantageous for radar systems as it allows for better detection and resolution of objects.

**Hint**: Recall the relationship between wavelength and frequency, and how it affects the properties of electromagnetic waves.

### Step 3: Determine the Relationship between A and R
Now we need to evaluate whether the reason (R) correctly explains the assertion (A).

- **Explanation**: Since microwaves are indeed suitable for radar systems due to their shorter wavelengths (which lead to higher frequencies), the reason provided does explain why the assertion is true.

**Hint**: Think about how the properties of microwaves (like wavelength and frequency) contribute to their effectiveness in radar technology.

### Conclusion
Both the assertion and the reason are true, and the reason correctly explains the assertion. Therefore, the correct answer is that both A and R are true, and R is the correct explanation of A.

**Final Answer**: Both A and R are true, and R is the correct explanation of A.