Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Consider the following statements about UV rays

1. UV-C have the shortest wavelength among all three types of UV rays.
2. UV-A is completely absorbed by Ozone layer.
3. Humans have large exposure to UV-A radiations.

Which of the above statements are correct?

• A. 1 only
• B. 2 and 3 only
• C. 1 and 3 only
• D. 1, 2 and 3

Answer 1

The correct option is C 1 and 3 only

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> 1. UV-C have the shortest wavelength among all three types of UV rays.
2. UV-C is completely absorbed by Ozone layer.
3. Humans have large exposure to UV-A radiations.