Find the period of a wave whose frequency is $250$ Hz.
A$250$ s
B$4$ s
C$0.04$ s
D$0.004$ sCORRECT
JUPEBPhysicsWaves and Optics
AI
Toaster Teacher
Why the answer is D, and why the others tempt you.
$T = \dfrac{1}{f} = \dfrac{1}{250} = 0.004$ s. A slip in the decimal place gives 0.04.
Want this in Pidgin, Yoruba, Igbo or Hausa? Sign up free →
Practice more Physics questions
JUPEB Physics has thousands more questions like this — with Worked answers on every one.