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`        A unit of length is chosen such that the speed of light in vacuum is unity.what is the distance between sun and the earth in terms of the new unit,if light takes 8 min.and 20 sec .to cover thid distance?`
6 months ago

Arun
23013 Points
```							Given thatThe speed of light in vacuum is unity And we want to find the distance between the Sun and the EarthUse formulaDistance = speed  × time Speed is unity = 1 unit /secTime = 8 min and 20 sec   = 8 × 60 + 20 sec = 500 sec Plug the values we get Distance between Sun and Earth = 1× 500 = 500 units
```
6 months ago
Khimraj
3008 Points
```							The speed of light in vacuum © = 1 new unit of length /sTime taken by light to reach the eartht = 8 min + 20 s = (8 X 60 + 20) s = 500 sDistance between the sun and the earth = Speed of light x Timex = c x t = 1 new unit of length/ s x 500 s = 500 new unit of length
```
6 months ago
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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions