Question

Match list-I (Electromagnetic wave type) with list-II (its association/application) and select the correct option from the choices given below the list:

List-I	List-II
Infrared waves	to treat muscular strain
Radio waves	for broadcasting
X-rays	to detect fracture of bones
Ultraviolet rays	absorbed by the ozone layer of the atmosphere

(A) a- $ (iii) $ ,b- $ (ii) $ ,c- $ (i) $ ,d- $ (iv) $
 (B) a- $ (i) $ ,b- $ (ii) $ ,c- $ (iii) $ ,d- $ (iv) $
 (C) a- $ (iv) $ ,b- $ (iii) $ ,c- $ (ii) $ ,d- $ (i) $
 (D) a- $ (i) $ ,b- $ (ii) $ ,c- $ (iv) $ ,d- $ (iii) $

Answer 1

Hint: In this question all we have to do is to match the options in list-I which are the types of electromagnetic waves with the list-II that are their association or application.

Complete step by step solution:
(a) Infrared waves- $ (i) $ To treat muscular strain because these waves can increase blood flow and improve in muscle stiffness.
(b) Radio waves- $ (ii) $ For broadcasting because these waves are transmitted easily through air and also these waves do not cause any type of damage to the human body if absorbed.
(c)X-rays- $ (iii) $ To detect fracture bones because the bone X-rays use a very small dose of ionizing radiation to produce the picture of any bone in the body.
(d) Ultraviolet rays- $ (iv) $ These rays are absorbed by the ozone layer of the atmosphere because when this ray reaches the stratosphere, it gets absorbed completely by the oxygen molecules present in the atmosphere and it never reaches earth.
Hence, option (B) is the correct answer.

Note:
We should keep in mind that Electromagnetic waves are created as a result of vibrations between electric and magnetic fields. Every wave has its own association or application depending on their wavelengths.