Neco 2019 Physics Question 21

Practice objective / multiple choice question 21 from the 2019 Neco Physics examination.

Neco 2019 Physics Objective / Multiple Choice Medium Difficulty
Question 21 NECO • 2019 • PHYSICS • objective

A speaker produces a sound intensity level of \(60\ \text{dB}\) at a point \(5\ \text{m}\) away. Assuming the sound spreads uniformly in all directions, what is the power output of the speaker in watts? Give your answer in scientific notation to two significant figures.

Answer Options

A. 4.0e-4
B. 1.2e-3
C. 2.5e-4
Correct Answer D. 3.1e-4
Correct Answer
D
Correct Option:
3.1e-4

About This Question

This is Neco 2019 Physics Question 21. It is one of the objective questions from the 2019 Neco Physics examination.

Difficulty level: Medium .

View More Neco 2019 Physics Questions More Neco Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support