Match the following:

Column I Column II
A. X-rays 1.  v=100-104 Hz
B. Ultraviolet wave (UV) 2.  v=1010 Hz
C. Long radio waves 3.  v=1016 Hz
D. Microwave 4.  v=1018 Hz
   
A B C D
1. 4 1 3 2
2. 1 4 2 3
3. 1 4 3 2
4. 4 3 1 2

Name

Frequency

Uses

A. X-rays

2×1016-3×1019 Hz

Medical pictures, medical testing

B. Ultraviolet wave (UV)

7.9×1014-2×1016 Hz

Germicidal lamp

C. Long radio waves

100-104 Hz

Signal transmission

D. Microwave

1×109-5×1011 Hz

Cooking radar