Match List-I with List-II :
List - I
List - II
(a)
Ultraviolet rays
(i)
Study crystal structure
(b)
Microwaves
(ii)
Greenhouse effect
(c)
Infrared rays
(iii)
Sterilizing surgical instrument
(d)
X-rays
(iv)
Radar system
Choose the correct answer from the options given below :