✓ Board-verified
Physics · 2025 · 3 marks
CBSE 2025 · Region 6 · Set 1 · Q25
Name the electromagnetic wave used (i) in radar, (ii) in eye surgery and (iii) as diagnostic tool in medicine. Write their wavelength range also.
Name the electromagnetic wave used (i) in radar, (ii) in eye surgery and (iii) as diagnostic tool in medicine. Write their wavelength range also.
Marking-scheme solution
The electromagnetic waves used are
(i) Microwaves
(ii) Ultraviolet / Infrared
(iii) X-Rays
Wavelength range of electromagnetic waves used(i) $\displaystyle 0.1$ m to $\displaystyle 1$ mm
(ii) $\displaystyle 400$ nm to $\displaystyle 1$ nm / 1mm to $\displaystyle 700$ nm
(iii) $\displaystyle 1$ nm to \(\displaystyle 10^{-3} \mathrm{~nm}\)
All Electromagnetic Waves questions2025 question paperNCERT solutions: Electromagnetic WavesPractice Electromagnetic Waves →
More from Electromagnetic Waves
- The ratio of amplitude of electric field to the amplitude of the magnetic field associated with an electromagnetic wave propagating in glass (n=1 ·…2026
- The magnetic field in a plane electromagnetic wave travelling in glass (n=1 · 5) is given by B_y=(2 × 10^-7 T) sin (α x+1 · 5 × 10^11 t) where x is…2026
- What are infrared waves? Why are these waves referred to as 'heat waves'? Give any two uses of these waves.2026
- Differentiate between conduction current and displacement current. A capacitor is connected across a source providing time-dependent current. Explain…2026
- Which one of the following has the highest frequency?2024
- The electromagnetic waves used in radar systems are:2023
- What are microwaves? How are they produced? Give any two uses of microwaves.2026
- Which one of the following electromagnetic radiation has the least wavelength?2023
CBSE Class 12 Physics past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.