12. A uniform rod of density ρ is placed in a wide tank containing a liquid of density

ρ₀ (ρ₀ > ρ) . The depth of liquid in the tank is half the length of the rod. The rod is in equilibrium, with its lower end resting on the bottom of the tank. In this position the rod makes an angle  with the horizontal

(a) sinθ= (1/2)√p₀/p                           (b) sinθ= (1/2)(p₀/p)

(c)  sinθ= √p₀/p                                   (d) sinθ= p₀/p

Answer-a