Which of the following electromagnetic wave is used in high precision application like LASIK eye surgery?

Options

A. Microwave
B. Ultraviolet rays
C. Gamma rays
D. X-rays

Explanation

To determine which electromagnetic wave is used in high precision applications like LASIK eye surgery, we can analyze the properties of different types of electromagnetic waves and their applications.

### Step 1: Understand the requirements for LASIK eye surgery
LASIK eye surgery requires a very precise and narrow beam of light to effectively reshape the cornea and correct vision. The precision of the beam is crucial to avoid damaging surrounding tissues.

**Hint:** Consider the characteristics of the light needed for surgical procedures.

### Step 2: Identify the types of electromagnetic waves
Electromagnetic waves are categorized based on their wavelengths, which range from radio waves (longest wavelength) to gamma rays (shortest wavelength). The main categories include:
- Radio waves
- Microwaves
- Infrared waves
- Visible light
- Ultraviolet (UV) rays
- X-rays
- Gamma rays

**Hint:** Recall the electromagnetic spectrum and the properties of each type of wave.

### Step 3: Analyze the properties of ultraviolet (UV) rays
Ultraviolet rays have shorter wavelengths than visible light, which allows them to be focused into a very narrow and precise beam. This makes UV rays suitable for applications that require high precision, such as LASIK eye surgery.

**Hint:** Think about how wavelength affects the ability to focus light.

### Step 4: Compare with other electromagnetic waves
- **Visible light**: While it can be focused, it does not have the precision required for surgical applications.
- **X-rays and gamma rays**: These have very short wavelengths and high energy, but they are not suitable for reshaping tissues due to their penetrating nature.
- **Infrared and microwaves**: These have longer wavelengths and are not suitable for high precision applications like LASIK.

**Hint:** Consider the implications of using different types of waves in medical applications.

### Conclusion
Based on the analysis, the electromagnetic wave used in high precision applications like LASIK eye surgery is **ultraviolet (UV) rays**.

**Final Answer:** Ultraviolet rays are used in high precision applications like LASIK eye surgery.