Waec 2022 Physics Question 35

Practice objective / multiple choice question 35 from the 2022 Waec Physics examination.

Waec 2022 Physics Objective / Multiple Choice 2 Difficulty
Question 35 WAEC • 2022 • PHYSICS • objective

A rotating disc contains a set of holes in a circle. An air jet is directed onto the holes and a note of frequency 480 Hz is produced. If the number of holes is 20, calculate the speed of rotation of the disc.

Answer Options

Correct Answer A. 10 revs/c
B. 20 \mathrm{rev} / \mathrm{s}
C. 24 \mathrm{rev} / \mathrm{s}
D. 8 rev/s
Correct Answer
A
Correct Option:
10 revs/c

About This Question

This is Waec 2022 Physics Question 35. It is one of the objective questions from the 2022 Waec Physics examination.

Difficulty level: 2 .

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