Question

Which of the following instrument make use of LDR

Answer 1

Answer:

Light Dependent resistor

Light Dependent resistor is a electronic component, with variable resistance which varies with the light intensity that falls on surface.

Answer 2

LDR is used in photographic light meters, burglar alarms, fire or smoke alarms

Explanation:

• There are so many instruments in which LDR application is used.
• LDr stands for "Light dependant Resistor".
• Some instruments like photographic light meters, burglar alarms, fire or smoke alarms and in lighting controls for street lamps or garden lamps.
• This feature is also present in some cars.
• Cars can sense the light automatically and for this purpose sensing headlamps are installed in cars that is also an application of LDR.