JEE Mains · Physics · STD 11 - 1. units,dimensions and measurement
Given below are two statements : Statements \(I\) : Astronomical unit \((Au)\). Parsec \((Pc)\) and Light year \((ly)\) are units for measuring astronomical distances. Statements \(II:\) \(Au < Parsec ( Pc ) < ly\) In the light of the above statements. choose the most appropriate answer from the options given below:
- A Both Statements \(I\) and Statements \(II\) are correct.
- B Statements \(I\) is correct but Statements \(II\) is incorrect.
- C Both Statements \(I\) and Statements \(II\) are incorrect.
- D Statements \(I\) is incorrect but statements \(II\) is correct.
Answer & Solution
Correct Answer
(B) Statements \(I\) is correct but Statements \(II\) is incorrect.
Step-by-step Solution
Detailed explanation
\(1 AU =1.496 \times 10^{11}\,m\) \(1 \text { par sec }=3.08 \times 10^{16}\,m\) \(1 \text { light year }=9.46 \times 10^{15}\,m\) So, \(Au < ly < Per\,sec\)
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