Asked: U.P.P.C.S. (Pre) 2012medium Level
QUESTION STATEMENT:द्विभाषी / Bilingual
लेज़र एक युक्ति है, जिसके द्वारा उत्पन्न किया जाता है-
Laser is a device by which is produced-
SELECT CORRECT OPTION:
A
स्वतः विकिरण
Spontaneous radiation
B
वर्ण विक्षेपित विकिरण
Dispersed radiation
C
प्रकीर्ण विकिरण
Scattered radiation
D
उद्दीपित विकिरण
Stimulated radiation
Correct
Official Solution & Explanation:
Correct Answer: Option D(उद्दीपित विकिरण)
लेजर (LASER) एक ऐसी युक्ति है, जिसमें उद्दीपित उत्सर्जन (Stimulated Emission) के प्रक्रम द्वारा एकवर्णी (monochromatic), कला-सम्बद्ध (coherent) तथा उच्च तीव्रता वाला विकिरण उत्पन्न किया जाता है।
Laser is a device that produces stimulated, coherent, and monochromatic radiation via the quantum optical process of stimulated emission.
Subject: General Science•Topic: Miscellaneous (Physics)•Subtopic: Miscellaneous (Physics)
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