JEE Main 2026 Physics question
A new unit (α) of length is chosen such that it is equal to the speed of light in vacuum. What is the distance between Venus and Earth in terms of α units if light takes 6 min. 40 s to cover this distance?
Answer: (B)
Solution
6 min 40 s = 400 s. Distance = c × 400 s, and with the unit α = c (per second) this is 400 α.