Aman, holding a weight in each hand, stands at the center of a horizontal frictionless rotating turntable. the effect of the weights is to double the rotational inertia of the system. as he is rotating, the man opens his hands and drops the two weights. they fall outside the turntable. then:
a. his angular velocity doublesb. his angular velocity remains about the samec. his angular velocity is halvedd. the direction of his angular momentum vector changese. his rotational kinetic energy increases

Explanation:CE

Let after the fall of weight from hands , the moment of inertia reduces from 2I to I. Since no external torque is acting on the system , angular momentum will be conserved.

I₁ ω₁ = I₂ ω₂

2I ω₁ = I ω₂

2ω₁ =  ω₂

So , angular velocity will be doubled.

Option A is correct.

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.