The phenomenon of photoelectric effect is NOT used in
...The phenomenon of photoelectric effect is NOT used in
automatic doors
bimetallic strip thermometers
light meters in cameras
setting off burglar alarms
sound production from film tracks.
Correct answer is B
No explanation has been provided for this answer.
The correct unit of energy density is? ...
Which of the following has the shortest wavelength? ...
Cloud formation is the direct result of ...
Which of the following is/are longitudinal wave(s)? I. Light waves from the sun II. Sound waves...
The instrument used by designers to obtain different color pattern is called? ...