Plancks Quiz

1. What is the green color wavelength range?

2. Which material do we use an LED?

3. How photon emits in the LEDs?

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

5. What is the blue color wavelength?

6. What is the Red Color wavelength range?

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

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

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

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

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

12. 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?

13. What is Planck’s constant value?

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

15. Semiconductor Material name that shows the optical property?