Of the following units the one which is not a unit of time is\

Question

Professor PC Thomas Classes · Answer

1 Microsecond $=10^{-6} \mathrm{~s}$ 1 leap year - 366 days\ 1 lunar year $=$ time taken by moon to revolve round the sun once.\ 1 lunar month = $29 \frac{1}{2}$ days\ 1 lunar year $=291 / 2 	imes 12=354$ days\ 1 solar year -1 lunar year $=365 \frac{1}{4} 0-354$\ $=11 \frac{1}{4}$ days\ 1 lunar month = 27 days. 1 light year $=9.46 	imes 10^{15} \mathrm{~m}$\