PhysicsJEE Main 8 Apr 2026, Shift 2·Q1·MCQ·Easy

Units and Measurements · Units and SI

A new unit (

\alpha

) of length is chosen such that it is equal to the distance travelled by light in vacuum in 1 s. What is the distance between Venus and Earth in terms of

\alpha

units if light takes 6 min. 40 s to cover this distance?

(1) $200\,\alpha$
(2) $400\,\alpha$
(3) $300\,\alpha$
(4) $500\,\alpha$

We corrected a printing error in the original paper

Source printed “such that it is equal to the speed of light in vacuum” (a length cannot equal a speed); corrected to the intended “equal to the distance travelled by light in vacuum in 1 s”.

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See the full 8 Apr 2026, Shift 2 paper