Question

(i) Arrange the following electromagnetic radiation in the ascending order of their frequencies: X-rays, microwaves, gamma rays, radio waves

(ii) Write two uses of any two of these radiations.

Answer 1

(i)As we know higher energy rays would have higher frequency so given radiations can be arranged in order of increasing frequency as following i.e.

Radio waves < Microwaves < X-rays < Gamma rays


(ii) X-rays uses

1. X-rays are used to detect internal injuries and bone fractures.
2. X-rays are used to detect cracks or defects within the volume of materials

Radio waves uses

1. Radio waves are used in radio communication systems to broadcast information
2. For modulation purpose Radio waves are used as carrier waves