Eraser
Grazer
Maser
Laser
Answer is Right!
Answer is Wrong!
The correct answer is: D. Laser
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term “laser” originated as an acronym for “light amplification by stimulated emission of radiation”. The first laser was built in 1960 by Theodore H. Maiman at Hughes Research Laboratories.
Lasers are used in a wide variety of applications, including:
- Communication: Lasers are used in fiber optic communication systems to transmit data over long distances.
- Medicine: Lasers are used in surgery to cut and remove tissue.
- Manufacturing: Lasers are used to cut, weld, and mark materials.
- Entertainment: Lasers are used in laser shows and light displays.
Lasers are highly directional because they are emitted in a narrow beam. This makes them ideal for applications where a focused beam of light is required.
The other options are incorrect because they do not describe a light beam that is highly directional.
- Eraser: An eraser is a tool used to remove marks from paper.
- Grazer: A grazer is a type of grazing animal that feeds on low-growing vegetation.
- Maser: A maser is a device that amplifies microwaves through the stimulated emission of electromagnetic radiation.
I hope this helps!