JEE Main 2014 — Electromagnetic Waves Question with Solution

$$\left(1\right)$$ Infrared rays are used to treat muscular strain because these are heat rays.

$$\left(2\right)$$ Radio waves are used for broadcasting because these waves have very long wavelength runging from few centimeters to few hundred kilometers

$$\left(3\right)$$ $$X$$-rays are used to detect fracture of bones because they have high penetrating power but they can't penetrate through denser medium like bones.

$$\left(4\right)$$ Ultraviolet rays are absorbed by ozone of the atmosphere.