Q5) A semiconductor has an energy gap E,- 1.40 eV. If the electron mass and hole mass are 0.5x 10-31kg and 2.5 x 10-31 kg , respectively at T = 300-K, determine:
1. The position of the intrinsic Fermi level with respect to the middle of the energy gap.
2- The intrinsic concentration of charge carriers.
(17.5 Marks)

a and c

c is 100% but i am confused in a

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.