Asked: 43rd B.P.S.C. (Pre) 1999medium Level
QUESTION STATEMENT:द्विभाषी / Bilingual
प्रकाश का शून्यावकाश (निर्वात) में वेग अनुमानतः है -
The velocity of light in vacuum is approximately -
SELECT CORRECT OPTION:
A
$3 \times 10^{10}$ मीटर/से.
$3 \times 10^{10}$ m/s
B
$3 \times 10^8$ मीटर/से.
$3 \times 10^8$ m/s
Correct
C
$3 \times 10^8$ किलोमीटर/से.
$3 \times 10^8$ km/s
D
$3 \times 10^8$ प्रकाश वर्ष
$3 \times 10^8$ light years
Official Solution & Explanation:
Correct Answer: Option B($3 \times 10^8$ मीटर/से.)
निर्वात (शून्यावकाश) में प्रकाश का वेग यथार्थतः $$299,792,458$$ मीटर/सेकंड होता है, जिसे गणनाओं में लगभग $$3 \times 10^8$$ मीटर/सेकंड ($$3 \times 10^5$$ किमी./से.) माना जाता है।
The exact speed of light in vacuum is $$299,792,458\text{ m/s}$$, routinely approximated as $$3 \times 10^8\text{ m/s}$$.
Subject: General Science•Topic: Light / Optics•Subtopic: Light / Optics
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