A spherical shell is cut into two pieces along a chord as shown in fig. P is a point on the plane of the chord.
 

The gravitational field at P due to the upper part is I₁,and that due to lower part is I₂. What is the relation between I₁, and I₂, ?

• A

  ${\mathrm{I}}_1>{\mathrm{I}}_2$

• B

  ${\mathrm{I}}_1<{\mathrm{I}}_2$

• C

  ${\mathrm{I}}_1={\mathrm{I}}_2$

• D

  no definite relation