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Physics · 2023 · 2 marks
CBSE 2023 · Region 5 · Set 1 · Q21
Identify the electromagnetic wave whose wavelengths range is from about (a) 10^-12 m to about 10^-8 m. (b) 10^-3 m to about 10^-1 m. Write one use of…
Identify the electromagnetic wave whose wavelengths range is from about
(a)
$\displaystyle 10^{-12} \mathrm{~m}$ to about $\displaystyle 10^{-8} \mathrm{~m}$.
(b)
$\displaystyle 10^{-3} \mathrm{~m}$ to about $\displaystyle 10^{-1} \mathrm{~m}$. Write one use of each.
Marking-scheme solution
(a) X-rays Use: used as diagnostic tool in medicine. Treatment for certain forms of cancer. To study crystal structure Alternatively Gamma rays Use: used in medicine to destroy the cancer cell.
(b) Microwaves Use: In radar system for aircraft navigation
All Electromagnetic Waves questions2023 question paperNCERT solutions: Electromagnetic WavesPractice Electromagnetic Waves →
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CBSE Class 12 Physics past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.