Problem

![](https://storage.googleapis.com/diraq-contents/question-bank/question-images/1ceb0ed8d381/2025_11_20_15035248b42bfae1659eg-25.jpg) 142. Sphere

X

of mass

M

and charge

+q

hangs from a string as shown above. Sphere

Y

has an equal charge

+q

and is fixed in place a distance

d

directly below sphere

X

. If sphere

X

is in equilibrium, the tension in the string is most nearly (A)

M g+k q / d

(B)

M g-k q / d

(C)

M g+k q^{2} / d^{2}

(D)

M g-k q^{2} / d^{2}