Security System Using Laser Rays
Product Code: SB01/EC118
Q1. Where we can implement this project?
Ans1. We can implement this project in security systems, it can be used in any building or premises to avoid any stranger to enter into it.
Q2. What is the full form of LASER?
Ans2. The full form of LASER is Light Amplification by Stimulated Emission Radiation.
Q3. Why we are using the laser rays as one of the best sources of security systems?
Ans3.Laser is one of the best light emitting source of monochromatic light rays so it will provide an efficient signal to the system and very less prone to outside disturbances.
Q4. Why some laser rays are invisible and some visible?
Ans4. Laser is invisible and visible according to the wavelength (or frequency) and intensity of the beam, as well as the type and amount of impurities in the air. The beam must be of a wavelength that is visible to humans, and fog or dust scatters the light very strongly so that you can see it.
Q5.Why impedance becomes very low when rays are incident on the LDR?
Ans5. LDR is light dependent resistor which incident light on a photo resistor exceeds a certain frequency, photons absorbed by the semiconductor give bound electrons enough energy to jump into the conduction band. The resulting free electrons (and their hole partners) conduct electricity, thereby lowering resistance.