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Answer : 4. "दूरी"
प्रकाश वर्ष निम्न में से किस भौतिक राशि की इकाई है ?
5Q:
प्रकाश वर्ष निम्न में से किस भौतिक राशि की इकाई है ?
- 1लघुसमयान्तरालfalse
- 2द्रव्यमानfalse
- 3कार्यfalse
- 4दूरीtrue
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Answer : 4. "दूरी"
Explanation :
Light-year is the unit of length to measure large distances (astronomical distances).
The total distance travelled by light in 1 year is called 1 light year.
1 light-year = 9.46 × 1012 km.
Explanation for the incorrect options
The second (sec) is the unit of time.
A kg is the unit of mass.
Therefore, the Light year is the unit of distance. So, option (D) is correct.