The Total solution for NCERT class 6-12
A new unit of length is chosen such that the speed of light invacuum is unity. What is the distance between the Sun and the Earth in terms ofthe new unit if light takes 8 min and 20 s to cover this distance?
Distance between the Sun and the Earth:
= Speed of light ├Ч Time taken by light to cover the distance
Given that in the new unit, speed of light = 1 unit
Time taken,┬аt┬а= 8 min 20 s = 500 s
тИ┤Distance between the Sun and theEarth = 1 ├Ч 500 = 500 units