Previous year MCQs

General science UPPSC 2012 GS-1
Question

Laser is a device for producing

Answer & Solution

Answer: (Detailed Solution Below)

Option D: stimulated radiation

Detailed Solution:

The correct answer is “stimulated radiation”.
Laser is a device for producing stimulated radiation.

In a laser, atoms are excited to a higher energy state. When these excited atoms interact with incoming light of a specific wavelength, they are stimulated to emit light of the same wavelength and phase. This process is known as stimulated emission, and it results in a coherent, intense beam of light.

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