A physical quantity x depends on quantities y and z as follows: x = Ay + B tan (Cz), where A, B, and C are constants. Which of the following do not have the same dimensions?

The pairs of physical quantities that have the same dimensions is (are) (a) Reynolds number and cofficient of friction (b) Curie and frequency of a light wave (c) Laten heat and gravitational potential (d) Planck 's constant and torque

In an experiment four quantities a, b, c and d are measured with percentage error 1%, 2%, 3% and 4% respectively. Quantity P is calculated as follows : P=cd/a^3b^2​ % error in P is:

The coordinates of a particle moving in a plane are given by x(t)= a cos (pt)and y(t)= b sin (pt) where a,b (< a)and p are positive constants of appropriate dimensions. Then,

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