Convert the following into basic units: (i) 28.7 pm (ii) 15.15 pm (iii) 25365 mg





Q.27:- Convert the following into basic units:
(i) 28.7 pm
(ii) 15.15 pm
(iii) 25365 mg

 

Answer:-

(i) 1 pm = 10-12 m
28.7 pm = 28.7×10-12 m = 2.87×10-11 m
(ii) 1 pm = 10-12 m
∴15.15 pm = 15.15×10-12 m = 1.515 ×10-11 m
(iii) 1 mg = 10-3 g
25365 mg = 2.5365×104×10-3 g
Now,
1 g = 10-3 kg
2.5365×10 g = 2.5365×10×10-3 kg
∴25365 mg = 2.5365×10-2 kg