The units of refractive power are : o m^(-1) o m^2 o watts o joules

The unit of refractive power is

Explanation:

We know that lens power is also know as refractive power.The power of lens is the inverse of its focus length but focus length should be in meter. Refractive power is also known as optical power.

So the unit of refractive power is

Watts  : Watts is the unit of  power.It is the rate of work done per second.

Joules  : Joules is the unit of energy.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

higher potential

explanation:

because it is in a high speed so it must move into a of high potential