Lasers are used to burn and read CDs. Explain why a laser that emits blue light would be capable of burning and reading more information than one that emits infrared.

The electromagnetic radiation released by an atom when an inner shell vacancy is filled is known as a characteristic x-ray. When electrons jump from a higher to a lower energy state, these x-ray radiations are emitted by the atom.

Given that observers at a safe distance from an atmospheric test of a nuclear bomb feels its heat but receive none of its copious x rays.

Wavelength of x-rays photons is given as:

\[\lambda = \frac{{hc}}{E}\]

Here,λwavelength of x ray, h Planck's constant, c speed of light and E energy of x rays.

Lasers of various wavelengths can be used to burn and read CDs. However, blue-emitting lasers are preferable for this purpose.

Single-wavelength electromagnetic radiations are produced by the lasers, which are also very coherent. The wavelength of a laser that emits blue light is shorter than the wavelength of a laser that emits red light. Because the wavelength of a blue colour emitting laser is shorter than that of other lasers, its photons are more energetic. As a result, blue-emitting lasers are favoured for burning and reading CDs.

Therefore, the lasers that emit blue color is preferred for burning and reading CDs than other lasers.