Question

A device for producing intense and coherent (waves in step) beam of light is called

• A. laser
• B. maser
• C. search light
• D. none of the above

Answer 1

The correct option is A

laser

Explanation for correct option

Correct option- A

A laser is a device that creates a strong beam of light of a single color that is exceedingly pure.

Explanation for incorrect option

Option (B)- It's a gadget that uses stimulated emission to amplify electromagnetic waves and produce waves.

Option (C)- A device that projects a powerful beam of light with almost parallel rays in a certain direction by combining an exceptionally bright source with a mirrored parabolic reflector.

So, the correct answer is option (A) Laser.