Investigatory Project reintroduced in CBSE Physics Curriculum

CBSE has reintroduced Investigatory Projects in Physics wef AISSCE 2013. This would be applicable for students who are in class XI during the academic year 2011 – 12 and writing the Board Exam in 2013.

The activities are now for demonstration purpose only. A student is supposed to perform a minimum of 15 experiments in a year.

For exam, he/she has to perform 2 experiments; one from section A and one from section B.


 1 To study various factors on which the internal resistance/emf of a cell depends.

2. To study the variations, in current flowing, in a circuit containing a LDR, because of a variation. (a) in the power of the incandescent lamp, used to ‘illuminate’ the LDR. (Keeping all the lamps at a fixed distance). (b) in the distance of a incandescent lamp, (of fixed power), used to ‘illuminate’ the LDR.

3. To find the refractive indices of (a) water (b) oil (transparent) using a plane mirror, a equiconvex lens, (made from a glass of known refractive index) and an adjustable object needle.

4. To design an appropriate logic gate combinatin for a given truth table.

5. To investigate the relation between the ratio of (i) output and input voltage and (ii) number of turns in the secondary coil and primary coil of a self designed transformer.

6. To investigate the dependence, of the angle of deviation, on the angle of incidence, using a hollow prism filled, one by one, with different transparent fluids.

7. To estimate the charge induced on each one of the two identical styro foam (or pith) balls suspended in a vertical plane by making use of Coulomb’s law.

8. To set up a common base transistor circuit and to study its input and output characteristic and to calculate its current gain.

9. To study the factor, on which the self inductance, of a coil, depends, by observing the effect of this coil, when put in series with a resistor/(bulb) in a circuit fed up by an a.c. source of adjustable frequency.

10. To construct a switch using a transistor and to draw the graph between the input and output voltage and mark the cut-off, saturation and active regions.

11. To study the earth’s magnatic field using a tangent galvanometer.


  1. Physics Fan says:

    Please upload more suggestions for investigatory projects in physics and detailed procedure. Students and teachers, please post details of the projects you have undertaken so that others can take cue.

  2. neha..!! says:

    cn ny1 suggest me a project for physics class 12?

  3. Rockey Dayal says:

    to investigate the dependence of angel of deaveation on the angel of incidence using a hollow prism filled one by one with different tranperent fluids

    1. Vignesh says:

      Bro did you get it?

  4. Aryan says:

    in projects ke baare me bhi to kuch likho….

  5. vaibhav_cj says:

    Hey! If you are a class 12 student and looking for physics investigatory projects, do not miss CoolJunk DIY(do-it-yourself) physics kits:

    Using step-by-step visual instructions & detailed theory manual, you can make your physics investigatory project within hours & score 100% marks in practical. Here is the list of topic based projects for class 12:

    1. Verification of Kirchhoff Laws and Ohms Law
    2. Variable Resistors: Potentiometer, Preset & LDR: Sequential glowing of LEDs, Internal structure of potentiometer/preset, Working of LDR
    3. Capacitors-Charging and Discharging With Resistors & Time Constants
    4. Relay & Electromagnetism- Burglar Alarm, Alternate Switching, Oscillator
    5. Diode- VI Characteristics & Working, Low Resistance Path, Protection Device
    6. OR and AND Digital Logic Gates using Diodes
    7. NOR and NAND Digital Logic Gates using Diodes
    8. Zener Diode- Working & Reverse Breakdown Voltage, Voltage Regulator
    9. Transistor as Amplifier & Switch: Cut-off, Active & Saturation Regions
    10. Touch Activated Switch (Passing current through body) using a Transistor
    11. Darlington Pair (Multi-stage amplifier using transistors)
    12. Automatic Night Lamp using transistor and LDR
    13. OR and AND Logic Gates using Transistors
    14. NOR and NAND Logic Gates using Transistors
    15. NOT Gate (Transistor as an Inverter)
    16. LED Blinker (or Flasher) using a Transistor
    17. H-Bridge (Motor-driving circuit used in robotics) using transistors
    18. DC Motor: Studying relation between RPM and Voltage
    19. Wheatstone Bridge: Calculating the unknown resistance using two fixed resistors and a variable resistor (potentiometer)
    20. Full-wave Bridge Rectifier (Using diodes and a 12V AC transformer)
    21. Full-wave rectifier using diodes and a center-tapped 12V AC transformer
    22. Joule Thief: Drawing energy from a dead cell using an inductor
    23. IR (Infrared) Security or Intrusion Alarm System
    24. Temperature Sensor using a thermistor