The diagram below shows the oscillation of a simple pendulum.

If the frequency of the oscillation is 4.0 Hz,
what is the time taken for the pendulum bob
to move from Q to R?

A 0.0625 s
B 0.125 s
C 0.250 s
D 0.500 s

I think option B 0.125

Explanation:

but i am not sure so don't mind

there are no correct statementd on the list of choices you provided.

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .