Practice portal › Electromagnetic Waves › Uses of the Bands, and lambda nu = c
Asked in JEE Main 27th June 1st Shift 2022 · Uses and atmospheric effects
UV kills germs (8.4.5, water purifiers), hence sterilising surgical instruments → (iii)
8.4.2: microwaves are suitable for radar systems → (iv); 8.4.3: infrared maintains the earth's warmth through the greenhouse effect → (ii)
X-ray wavelengths (1 nm to 10⁻³ nm match interatomic spacing, so X-rays study crystal structure → (i)
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