A particle falls freely near the surface of the earth. Consider a fixed point O (not vertically below the particle) on the ground. Then pickup the incorrect alternative or alternatives.

The magnitude of angular momentum of particle about O=mvdSince speed v of particle increases, its angular momentum about O increases. Magnitude of torque of gravitational force about O=mgd ⇒ torque is constant.Moment of inertia of particle about O=mr2 Hence MI of particle about O decreases. Angular velocity of particle about O=vsinθr∵v and sinθ  increases and r decreases.Thus, angular velocity of particle about O increases.