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Physics
Which of the following practical units of length is not correct?
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Q. Which of the following practical units of length is not correct?
Physical World, Units and Measurements
A
1 fermi $=10^{-15} m$
B
1 astronomical unit $=1.496 \times 10^{11} m$
C
1 parsec $=3.26$ light year
D
1 light year $=9.46 \times 10^{12} m$
Solution:
1 light year $=9.46 \times 10^{15} m$