Planck’s Constant Experiment Viva Quiz

1. Which material do we use an LED?

2. What is Planck’s constant value?

3. How photon emits in the LEDs?

4. How are photons emitted from the LED and from which section of the LED?

5. Can we achieve the population inversion process in LED too?

6. To determine Planck’s Constant, we equate two different energies. The name of these two are;

7. In a semiconductor diode (as per V-I Characteristics) the current doesn’t flow in the beginning. But at a certain value of the potential, it appears. What has known as the name of this potential?

8. What is the green color wavelength range?

9. Why do not LED starts to glow immediately when you provide biasing to that?

10. What is the blue color wavelength?

11. Who discovered that radiation is in a discrete form of energy?

12. Semiconductor Material name that shows the optical property?

13. Why does the Blue color LED stopping potential is greater than the Red color LED?

14. Does the LED work in the forward bias or the reverse bias?

15. What is the Red Color wavelength range?