1 µm=10 ...m

  1nm=10...W                                                                                 

1MW= 10...W

   

                                                                         Remplaçez les pointillé par des puisssance de 10



Sagot :

1 µm= [tex]10^{-6} [/tex]m 

1nW=[tex] 10^{-8} [/tex]W                                                                                 
1MW= [tex] 10^{-5} [/tex]W