The phenomenon of photoelectric effect is NOT used in
A
automatic doors
B
bimetallic strip thermometers
C
light meters in cameras
D
setting off burglar alarms
E
sound production from film tracks.
Verified Correct Answer: B.
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #42900)