Question

answer these questions​

Answer 1

Answer:

18 ans: option is (2)  

19 ans option is (4)

Explanation:

18 ans : In p-type semiconductor, an intrinsic semiconductor is doped with trivalent impurities, that creates deficiencies of valence electrons called holes which are majority charge carriers.

19 ans : In one complete vibration, displacement is zero. So, average velocity in one complete vibration

=  Time interval /Displacement

yf-yi/t=0

Hence option D is correct answer

Answer 2

1. The correct option is (2) Holes are the majority carriers and trivalent atoms are the dopants. Explanation: In p-type semiconductor, an intrinsic semiconductor is doped with trivalent impurities, that creates deficiencies of valence electrons called holes which are majority charge carriers.
2. Holes are the majority carriers and trivalent atoms are the dopants. Holes are the majority carriers and pentavalent atoms are the dopants.
3. The correct option is (b) Holes are the majority carriers and trivalent atoms are the dopants. In a p-type semiconductor hole are the majority carriers and electrons are the minority carriers.
4. The correct option is (b) Holes are the majority carriers and trivalent atoms are the dopants. In a p-type semiconductor hole are the majority carriers and electrons are the minority carriers

Explanation:

• Average velocity of a particle executing SHM in one complete vibration is zero.In one complete vibration, displacement is zero. So, average velocity in one complete vibration
• =
• Timeinterval
• Displacement
• =
• T
• y
• f
• −y
• i
• =0
• Hence option D is correct answer