Question

The electromagnetic waves used in LASIK and cell phones are respectively:

• A. Microwaves and radio waves
• B. Ultraviolet rays and radio waves
• C. Infrared rays and microwaves
• D. X-rays and radio waves
• E. Radio waves and visible rays

Hint:

LASIK surgery uses UV light for precise tissue removal, and radio waves are commonly used in cell phone communication due to their ability to travel long distances and penetrate through objects.

Answer 1

The Correct Option is B

1. LASIK (Laser-Assisted in Situ Keratomileusis):

• LASIK surgery, which is used to correct vision, involves the use of a laser that uses ultraviolet (UV) rays to reshape the cornea of the eye. These rays have the necessary precision to cut the cornea without causing damage to surrounding tissues.

2. Cell phones:

• Cell phones operate using radio waves for communication. Radio waves are a type of electromagnetic radiation used for wireless communication in mobile phones, as well as for broadcasting radio and television signals.

Thus, the correct answer is that LASIK uses ultraviolet rays, and cell phones use radio waves.

\[ \boxed{\text{B) Ultraviolet rays and radio waves}} \]