A new unit of length is chosen such that | Class 11 Physics Chapter Unit and measurment, Unit and measurment NCERT Solutions

Question: A new unit of length is chosen such that the speed of light in vacuum is unity. What is the distance between the Sun and the Earth in terms of the new unit if light takes 8 min and 20 s to cover this distance?
Answer:

Distance between the Sun and the Earth:

= Speed of light × Time taken by light to cover the distance

Given that in the new unit, speed of light  = 1 unit 

Time taken, t  = 8 min 20 s = 500 s 

∴Distance between the Sun and the Earth = 1 × 500 = 500 units


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Welcome to the NCERT Solutions for Class 11 Physics - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 5: A new unit of length is chosen such that the speed of light in vacuum is unity. What is the distance....