Question

A laser focuses on an area equal to it's wavelength which is 600nm and rhe laser radiates energy at the rate of 1mW ,then the intensity is

Answer 1

This law is applicable only if the following Conditions are met..

1 - Two Bodies having Mass

2 - There must be Some Distance between them

According to Universal Gravitional Law :

(i)The Gravitional force Between two bodies having mass m1 and m2 directly depends on the product of their masses and

(ii) Inversely Proportional to the Square of distance between them...

F = Gravitional force

m1 and m2 are the masses of bodies

r = Distance between the bodies having masses m1 and m2...

Now from statement (i) and (ii) we must have

F = G m1 x m2 / r^2 ----(iii) where G is the constant of proportionality..called Universal gravitional Constant.....

According to relation (iii)..if mass of the body increases then F will increase too...and decreases if the distance between them increases...