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Question: Answered & Verified by Expert
Among the following the least unit for length is
PhysicsUnits and DimensionsAP EAMCETAP EAMCET 2023 (15 May Shift 1)
Options:
  • A parsec
  • B nanometer
  • C fermi
  • D angstrom
Solution:
1879 Upvotes Verified Answer
The correct answer is: fermi
1 parsec $=3.26 l y \cong 3.08 \times 10^{16} \mathrm{~m} ; 1$ nano meter $=1$ $\times 10^{-9} \mathrm{~m}$
1 fermi $=1 \times 10^{-15} \mathrm{~m}$ and 1 angstrom $=1 \times 10^{-10} \mathrm{~m}$ Therefore the least unit for length among the given is fermi.

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