A) Parsec
B) Light year
C) Angstrom
D) Nano
Correct Answer: D
Solution :
1 angstrom \[=1\overset{\text{o}}{\mathop{\text{A}}}\,={{10}^{-10}}m\] 1 light year \[=1ly=9.46\times {{10}^{15}}m\] 1 parsec = 3.26 light year Nano is a prefix 1 nano \[={{10}^{-9}}\,m\]
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