An object of mass m and volume v, is totally immersed in a liquid of density p. The tension of a string holding it is
-
A.
mg -
B.
(m + pv)g -
C.
(m – pv)g -
D.
pvg -
E.
[M/m-pv]g
Correct Answer: Option C
Explanation
Tension = upthrust on object
= weight in air – weight i liga
= mg – pvg
= (m – pv)g