Question

10 millimeters are equal to _____ nanometers.

Question 9 options:

	A) 103
	B) 107
	C) 10-3
	D) 10-7

Answer 1

Some prefix used for subsidiary units

desi =      10 ^-1 m

centi =     10 ^-2 m        

milli   =      10 ^-3 m

micro =     10 ^-6 m

nano =      10 ^-9 m

pico =       10 ^-12 m

femto       10 ^-15 m

Answer

10 milli miter = ? Nano meter

1 millimiter = 10 ^-3 m

10 millimiter =10$\times$10 ^-3 m =10 ^-2 m

1 nano meter = 10 ^-9 m    Or 1 meter = 10 ⁹ nano meter

1 meter      = 10 ⁹ nano meter

10 ^-2 meter=10 ^-2 $\times$ 10 ⁹

                        =10 ⁷ nano meter

10 millimiter =10 ^-2 m =10 ⁷ nano meter

Answer is option B