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Physics · 2024 · 3 marks
CBSE 2024 · Region 4 · Set 1 · Q27
Name the electromagnetic waves with their wavelength range which are used for (i) FM radio broadcast (ii) detection of fracture in bones (iii)…
Name the electromagnetic waves with their wavelength range which are used for
(i)
FM radio broadcast
(ii)
detection of fracture in bones
(iii)
treatment of muscular strain
Marking-scheme solution
(i)
Radio waves — wavelength range $\displaystyle >0.1 \mathrm{~m}$
(ii)
X-rays — wavelength range $\displaystyle 1 \mathrm{~nm}-10^{-3} \mathrm{~nm}$
(iii)
Infrared waves — wavelength range $\displaystyle 1 \mathrm{~mm}-700 \mathrm{~nm}$
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CBSE Class 12 Physics past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.