Waec 2024 Physics Question 12

Practice essay / theory question 12 from the 2024 Waec Physics examination. This question covers General .

Waec 2024 Physics Essay / Theory
Topic: General
Question 12 WAEC • 2024 • PHYSICS • essay

Question Parts

( a )
Mention three facts about the photoelectric effect.
( b )
An electric magnetic radiation source of power \( 6 \times 10^{-3} W \) emits \( 1 \times 10^{16} \) photons per second. The most energetic photoelectron ejected from a metal surface is stopped by a potential difference of \( 2.2 V \). Calculate the work function of the metal. [mass of (photo) electrons \( 9.1 \times 10^{-31} \mathrm{~kg} \), ic \( =1.6 \times 10^{-19} \) C]
( c )
State two factors on which the activity of a radioactive sample depends.
( d )
Cobalt-60 source has an activity of \( 2.0 \times 10^{6} B q \) and a half-life of \( 1.8 \times 10^{8} s \). Calculate the number of radioisotope nuclei in the source.

Detailed Solution & Marking Scheme

Get the step-by-step solution, key points required by examiners and detailed marking guidance through the Edcrib AI Tutor.

Reveal Answer

About This Question

This is Waec 2024 Physics Question 12. It is one of the essay questions from the 2024 Waec Physics examination.

The question covers General .

View More Waec 2024 Physics Questions More Waec 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