Emote controls use invisible light of frequency just below the visible range. This part of the electromagnetic spectrum is called

Complete Question:

Remote controls use invisible light of frequency just below the visible range. This part of the electromagnetic spectrum is called A) infrared B) microwaves C) ultraviolet D) x-rays.

Correct Option:

Remote controls use invisible light of frequency just below the visible range. This part of the electromagnetic spectrum is called "infrared".

Option: A

Explanation:

An IR remote or transmitter utilizes light to deliver signals to the system it regulates from the remote to. It produces invisible infrared light pulses which correlate to different binary codes. These codes are instructions like power-on button, volume-up and down, or channel up and down button.

The visible light color is red, with the longest wavelength and the lowest amount of energy. Infrared is the spectrum's invisible field, with wavelengths only longer than the red light. Microwaves, ultraviolet, and x-rays are all too powerful for remote control applications.

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .