BioMedical Admissions Test (BMAT) 2026 – 400 Free Practice Questions to Pass the Exam

The electromagnetic wave primarily used in remote controls is infrared radiation. This is due to its capability to transmit signals effectively over short distances. Infrared waves have wavelengths that are longer than visible light but shorter than microwaves, making them suitable for the transmission of data through modulation.

In remote controls, infrared signals are typically emitted from a light-emitting diode (LED) and detected by a photodiode in the receiving device. The infrared spectrum allows for engagement without interference from visible light, ensuring that the signals can be received clearly even in environments with natural light sources.

The other options fall outside the typical uses of remote control technology. Microwaves are more suited for communication and cooking applications due to their longer wavelengths. X-rays are utilized primarily in medical imaging and security applications, given their ability to penetrate materials and provide detailed internal views. Gamma rays, with the shortest wavelengths and highest energy, are predominantly used in cancer treatment and imaging but are not practical for everyday remote control functionality due to safety concerns and their behavior in the environment.