Question

Using the principle of homogeneity of dimensions,
find which
of the following is correct :
1) T² = 4 π ²2
2) T^2= 4π^2r^3÷G
3) T² - 4π²r^3÷GM
Where T is time period, G is gravitational constant,
M is mass
and r is radius
of orbit.​

Answer 1

3rd is correct

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