Given below are two statements : Statement I : Astronomical unit (Au), Parsec (Pc) and Light year (ly) are…

Given below are two statements :
Statement I : Astronomical unit (Au), Parsec (Pc) and Light year (ly) are units for measuring astronomical distances.
Statement II : Au < Parsec (Pc) < ly
In the light of the above statements, choose the most appropriate answer from the options given below:
  1. Both Statements I and Statements II are incorrect
  2. Statements I is correct but Statements II is incorrect
  3. Both Statements I and Statements II are correct
  4. Statements I is incorrect but Statements II is correct

Solution

Astronomical unit denotes roughly the distance from Earth to the Sun. Parsec is a unit of length used to measure the large distances to astronomical objects outside the Solar System. A light-year is another large unit of length used to express astronomical distances.

The relation between these units are as follows:

1 Parsec =2×105 Au

1Au=1.58×10−5 ly

Thus, 1Au< ly < Parsec .

Hence, Statements I is true but Statements II is false.

Asked in: JEE Main 2023 (11 Apr Shift 1)

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