Kendriya Vidyalaya Mankhurd

PHYSICS investigatory PROJECT

• Topic => Laser Security Alarm System• Submitted To => PROMODINI PAL• Submitted By => NIKHIL CHAURASIA• Class => XII - A• Roll No. => _ _ _ _ _ _ _ _ _• Date of Submission : _ _/_ _/_ _ _ _

CERTIFICATE

This is to certify that Mr. NIKHIL CHAURASIA of class XII - A ,ROlL NO. - _ _ _ _ _ _ _

Has successfully completed this physics project entitled " Laser Security Alarm System " under my guidance and supervision in the academic year

2016-2017, Miss PROMODINI PAL

Principal External Internal

Examiner Examiner

ACKNOWLEDGEMENT

First of all, I heartily thank my physics Teacher, Miss PROMODINI PAL for her

incomparable efforts, And

I thank Mr. DASHRATH SOLANKI for constant support and cooperation indeed towards me

in the completion of this project.

Finally I would also grateful to my friends and parents who devoted their auspicious time in

completion of this project.

PREFACE

"My project provides complete information on the topic "Laser Security Alarm System " and maximum efforts

have been taken to make the project more comprehensive and lucid to understand. My project

covers a variety of sub topics like It's working, setup, uses in life and different aspects of Laser Security Alarm

System. One may notice a perceptible change in written in an easy dialogue style engaging the readers constantly and included with more informatics comments. I assure you to go through this project thoroughly to know a bit more and facts about Laser Security Alarm System.

INDEX

• Introduction.• Components / Materisl Required.• Circuit Diagram.• Experimental Setup.• Working.• Uses of Laser Security Alarm System.• Advantages of Laser Security Alarm

System.• Conclusion. • BIBLIOGRAPHY

Components / Material Required

(1) Printed circuit boardA printed circuit board (PCB) mechanically supports and electrically connects electronic components using conductive tracks, pads and other features etched from copper sheets laminated onto a non-conductive substrate. Components – capacitors, resistors or active devices – are generally soldered on the PCB. Advanced PCBs may contain components embedded in the substrate.

2) LDR

A photoresistor or light-dependent resistor (LDR) or photocell is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident light intensity; in other words, it exhibits photoconductivity

BIBLIOGRAPH

Sources of in formation are=> www.google.com=> NCERT 12TH BOOK=> PHYSICS PRACTICAL BOOK