The electromagnetic waves used to purify water are:

Question

The electric field in a plane electromagnetic wave is given by \(E_z = 60 \cos(5x + 1.5 \times 10^{10} t)\) V/m. Then expression for the corresponding magnetic field (\(B_y\)) is (here subscripts denote the direction of the field) is:

Answer 1

Ultraviolet (UV) rays are employed in water purification due to their germicidal attributes. UV radiation inactivates or eliminates detrimental microbes by compromising their DNA, thereby establishing it as an efficient water purification technique.
Infrared rays are predominantly utilized for thermal applications.
X-rays and Gamma rays find application in medical diagnostics and oncology interventions, but are not typically applied to water purification.
Therefore, the appropriate response is Ultraviolet rays.\bigskip

The electromagnetic waves used to purify water are:

Show Hint

The Correct Option is B

Solution and Explanation

Top Questions on Electromagnetic Waves

Questions Asked in CBSE Class XII exam