Correct Answer  Option 1 : M
^{0}L
^{0}T
^{2}
The correct answer is option 1) i.e. T^{2}.
CONCEPT:

Angular acceleration: It is the rate of change angular velocity of an object with respect to time i.e.
α=ωf−ωit
\(ω = \frac{ω_f ω_i}{t}\)
where, α = angular acceleration, ωf = final angular velocity, ωi = initial angular velocity, and t = time
EXPLANATION:
Linear velocity (v) = Angular velocity (ω) × radius (r)
 The dimension of angular velocity is:
Angular velocity = Linear velocity/radius = LT^{1}/L = T^{1}
 The dimension of angular velocity is:
Angular acceleration = angular velocity/time = T^{1}/T = T^{2}.
 LT^{2} is the dimensional formula of linear acceleration.
 LT^{1} is the dimensional formula of linear velocity.