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What is the full form of LASER?

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What is the full form of LASER?

(a) Light Absorbent and Stimulated Emission of Radiations

(b) Light Absorbing Solar Energy Resource

(c) Light Amplification by Stimulated Emission of Radiations

(d) Light Amplification of Singular Emission of Radiations

The question was posed to me in an online quiz.

My question is based upon Introduction and Applications of Laser topic in chapter Laser of Engineering Physics II

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The correct option is (c) Light Amplification by Stimulated Emission of Radiations

Easy explanation: LASER is a short form of Light Amplification by Stimulated Emission of Radiations. Stimulated Emission is the process by which amplification of radiations takes place. Hence the meaning of LASER that the light is amplified by stimulating the emission of radiations.

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