Question on: WAEC Physics - 2018
In which of the following situations is photoelectric effect employed?
I. Automatic devices for switching on light at dusk
II. Automatic doors in departmental stores
III. Automatic devices for switching on air conditioners
IV. Automatic voltage stabilizers
A
I, II and IV only
B
I, III and IV only
C
III and IV only
D
I and II only
Ask EduPadi AI for a detailed answer
Correct Option: A
Add your answer
Please share this, thanks!
No responses