Dimensional formula

if the dimensional formula of Y is LT^-1 and z is LT^-2 then the dimensional formula of X which verifies the equation Y = XZ

• L

• T

• T^-3

• can not defined

if the dimensional formula of velocity is LT^-1 then its measuring unit is ............

• m.s

• m/s

• m/s^-2

• m.s^-2

if the dimensional formula of A is M² LT^-2 and that of B is M²LT^-2 then the dimensional formula of ( 4A - 2B ) is ...............

• M⁴L²T^-4

• M^-4L^-2T⁴

• M²LT^-2

• has no physical meaning

Assume that the displacement ( d ) of a body is related with time ( t ) as in the given relation d = ct² , then the dimensional formula of c is .................

• LT²

• LT^-2

• L/T^-2

• L^-1T²

• Kg/m³

• Kg/m^-3

• Kg . m³

• m³/Kg