Match List-I with List-II.
List-I:
A. Microwaves
B. UV rays
C. Infra-red rays
D. X-rays
List-II:
I. Physiotherapy
II. Treatment of cancer
III. Lasik eye surgery
IV. Aircraft navigation
Choose the correct answer from the option given below:
List-I:
A. Microwaves
B. UV rays
C. Infra-red rays
D. X-rays
List-II:
I. Physiotherapy
II. Treatment of cancer
III. Lasik eye surgery
IV. Aircraft navigation
Choose the correct answer from the option given below:
Answer: A → IV, B → III, C → I, D → II
Solution
Microwaves are the waves used in radar, which guides aircraft, so they belong with aircraft navigation. Ultraviolet light from an excimer laser reshapes the cornea in Lasik eye surgery, so ultraviolet goes with that procedure. Infra-red radiation is felt as heat and is applied in physiotherapy to warm tissue, pairing it with physiotherapy. X-rays, being highly penetrating and destructive to dividing cells, are used in the radiotherapy of cancer, so they match the treatment of cancer. The correct pairing is microwaves with aircraft navigation, ultraviolet with Lasik surgery, infra-red with physiotherapy, and X-rays with the treatment of cancer.
JEE Main · 2023 · 31 Jan 2023 · Shift 2 · Match the columns