MCQ
Match List $- I$ (Electromagnetic wave type) with List $- II$ (Its association/application) and select the correct option from the choices given below the lists

  લિસ્ટ$-I$   લિસ્ટ$-II$
$a$. Infrared waves $i$. To treat muscular strain
$b$. Radio waves $ii$. For broadcasting
$c$. $X-$rays $iii$. To detect fracture of bones
$d$. Ultraviolet rays $iv$. Absorbed by the ozone layer of the atmosphere

$a$         $b$         $c$         $d$

  • A
    $i$         $ii$         $iv$         $iii$  
  • B
    $iii$         $ii$         $i$         $iv$  
  • $i$         $ii$         $iii$         $iv$  
  • D
    $iv$         $iii$         $ii$         $i$  

Answer

Correct option: C.
$i$         $ii$         $iii$         $iv$  
c
$(1)$ Infrared rays are used to treat muscular strain because these are heat rays.

$(2)$ Radio waves are used for broadcasting because these waves have very long wavelength ranging from few centimetres to few hundred kilometers

$(3)$ $X-$ rays are used to detect fracture of bones because they have high penetrating power but they can't penetrate through denser medium like bones.

$(4)$ Ultraviolet rays are absorbed by ozone of the atmosphere.

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