Question

A wave oscillates 50 times per second. What is its frequency?

A.
25 hertz
B.
50 hertz
C.
5.0 × 102 hertz
D.
2.0 × 10-2 hertz

Answer 1

"per second" is exactly the definition of "Hertz".

50 per second is 50 Hz. (B)

Answer 2

Frequency of the wave is f = 50 Hz

Step-by-step explanation:

It is given that, a wave oscillates 50 times per second. The number of oscillations per second is called frequency of a wave. Mathematically, it can be written as:

`frequency=no\ of\ oscillations`

Here, number of oscillations, n = 50

So, frequency of this wave is equivalent to 50 Hz. It is equal to number of cycles per second.

So, the correct option is (b). Hence, this is the required solution.