Question

Ultraviolet rays are potentially harmful to us primarily due to their

A. long wavelength.
B. intensity
C. amplitude.
D. high frequency.

Answer 1

The correct answer is d. high frequency.

UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun. These UV rays are the leading cause of skin cancer, making them very harmful.

Answer 2

D) High frequency [is the right answer]