A micrometer is defined as one millionth of a millimeter. A length of 12,000 micrometres may be represented as
0.00012m
0.0000012m
0.000012m
0.00000012m
0.000000012m
Correct answer is C
1 UM = 10-6mm = 10-9m
1.2 x 104 x 10-9m = 1.2 x 10-5m (0.000012)