Match List – I with List – II.
| LIST I | LIST II | ||
|---|---|---|---|
| A. | Rays used in satellite communication | I. | X-rays |
| B. | Rays produced in nuclear reaction | II. | \( \gamma \)-rays |
| C. | Radiation used for studying crystal structure | III. | Ultraviolet rays |
| D. | Radiation absorbed by ozone layer | IV. | microwave |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → A-IV, B-II, C-I, D-III
Each use or origin in List I is linked to the region of the electromagnetic spectrum that has the matching property.
(A) Rays used in satellite communication — this matches (IV) microwave. Microwaves pass through the ionosphere and travel in straight lines, so they are used for satellite links.
(B) Rays produced in nuclear reaction — this matches (II) \( \gamma \)-rays. They are emitted by nuclei in radioactive decay and nuclear reactions.
(C) Radiation used for studying crystal structure — this matches (I) X-rays. Their wavelength (about \( 10^{-10}\,\mathrm{m} \)) is of the order of the spacing between atoms in a crystal, so a crystal diffracts them.
(D) Radiation absorbed by ozone layer — this matches (III) Ultraviolet rays. The ozone layer in the stratosphere absorbs the harmful ultraviolet radiation of the sun.