What models can you make in physics for class 12th?

you can make a model showing torque on a circular current loop. it's very simple and you can make it yourself...

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Suggestion #2:

The best model would be one that has something to do with something you

learned, or something that was taught, in Physics class 12th. Somebody who

was there could tell you what was covered, and then you could model it. The

teacher would love it.

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Suggestion #3:

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