(a) Source of microwave frequency is magnetron.
(b) Source of infrared frequency is vibration of atoms and molecules.
(c) Source of Gamma rays is radioactive decay of nucleus
(d) Source of X-rays inner shell electron transition.
JEE Main 2021 — Physics Electromagnetism
Match List - I with List - II.
| List-I | List-II | ||
| (a) | Source of microwave frequency | (i) | Radioactive decay of nucleus |
| (b) | Source of infrared frequency | (ii) | Magnetron |
| (c) | Source of Gamma Rays | (iii) | Inner shell electrons |
| (d) | Source of X-rays | (iv) | Vibration of atoms and molecules |
| (v) | LASER | ||
| (vi) | RC circuit | ||
Held on 24 Feb 2021 · Verified 6 Jul 2026.
(a)-(ii), (b)-(iv), (c)-(vi), (d)-(iii)
(a)-(vi), (b)-(iv), (c)-(i), (d)-(v)
(a)-(vi), (b)-(v), (c)-(i), (d)-(iv)
(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
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