Semiconductors have electron number density of order

A. 1024 m-3

B. 1020 m-3

C. 1012 m-3

D. 1023 m-3

1 Answer

Answer :

1023 m-3

Related questions

Description : 10 mole of carbon contains A. 6.02 × 1024 atoms B. 6.03 × 1023 atoms C. 6.02 × 1023 atoms D. 6.04 × 1024 atoms

Last Answer : 6.02 × 1024 atoms

Description : Mass of Earth when it's radius is 6400 km and gravitational field strength is 9.81 N kg-1 is A. 6.0 × 1024 kg B. 5 × 1023 kg C. 40 × 109 kg D. 9 × 1024 kg

Last Answer : 5 × 1023 kg

Description : How many molecules are present in 2.5 liters of gas at STP? w) 5.6 x 1024 molecules x) 1.5 x 1024 molecules y) 6.0 x 1023 molecules z) 6.7 x 1022 molecules

Last Answer : ANSWER: Z -- 6.7 X 1022 MOLECULES

Description : A virtual memory has a page size of 1K words. There are eight pages and four blocks. The associative memory page table contains the following entries:  Which of the following list of virtual addresses (in ... 1234, 4012, 5000, 6200 (C) 1020, 3012, 6120, 8100 (D) 2021, 4050, 5112, 7100

Last Answer : Answer: C Explanation: The pages which are not in main memory are: 1020 will not cause page fault (1024-2047) 3012 will not cause page fault (3072-4095) 6120 will not cause page fault (4096-5119) 8100 will not cause page fault (6144-7167)

Description : Number density for copper isA. 10-29 m-3 B. 1030 m-3 C. 1029 m-3 D. 1020 m-3

Last Answer : 1029 m-3

Description : The value of Avogadro Number is - (1) 6.023 x 1022 (2) 6.023 x 1023 (3) 6.023 x 1024 (4) 6.023 x 1025

Last Answer : (2) 6.023 x 1023 Explanation: In chemistry and physics, the Avogadro constant is defined as the number of constituent particles (usually atoms or molecules) in one mole of a given substance. It has dimensions of reciprocal mol and its value is equal to.

Description : The mass, in kg, of the earth if its radius is 6400 km, will be a.6 x 1024 b.6 x 1025 c.107 dynes d.6 x 1023 e.6 x 1022

Last Answer : a. 6 x 1024

Description : 38. Consider three sets \( X, Y \) and \( Z \) having 6,5 and 4 elements respectively. A.11 these 15 elements are distinct. Let \( S=(X-Y) \cup Z \). How many proper subsets does \( S \) have?(a) 255(b) 256(c) 1023(d) 1024

Last Answer : 38. Consider three sets \( X, Y \) and \( Z \) having 6,5 and 4 elements respectively. A.11 these 15 ... have? (a) 255 (b) 256 (c) 1023 (d) 1024

Description : 17th attack of Sultan Muhammood Ghazni on India was took place in: A. 1025 B. 1024 C. 1023 D. 1026

Last Answer : ANSWER: D

Description : One kilobyte is equal to 1) 1000 bytes 2) 1024 bytes 3) 100 bytes 4) 1023 bytes

Last Answer : 2) 1024 bytes

Description : If electron has to be confined in the nucleus, its speed would have to be greater than a) 1010 cm/s b) 1010 m/s c) 1020 m/s d) 1020 cm/s

Last Answer : b) 1010 m/s

Description : Estimate the number of atoms comprising a silicon chip that is 0.2 millimeters by 0.2 millimeters by 0.1 millimeters, given that the density of silicon is 2.34 grams per cubic centimeter, the number of atoms in a gram-weight is approximately 6 x 1023 atoms, and the atomic weight of silicon is 28:

Last Answer : ANSWER: 2 x 1017

Description : Actual velocity of electrons between collisions is A. 1030 m s-1 B. 1020 m s-1 C. 102 m s-1 D. 105 m s-1

Last Answer : 1020 m s-1

Description : State one requirement of an electron tube, which does not exist for semiconductors, that makes the tube less efficient than the semiconductor.

Last Answer : The electron tube requires filament or heater voltage, whereas the semiconductor device does not; consequently, no power input is spent by the semiconductor for conduction.

Description : An electron is travelling at right angles to a uniform magnetic field of flux density 1.2 mT with a speed of 8 × 106 m s-1, the radius of circular path followed by electron is A. 3.8 cm B. 3.7 cm C. 3.6 cm D. 3.5 cm

Last Answer : 3.8 cm

Description : Reduce the number of employees from 1200 to 1020. Find the percent decrease in the company's workforce. Round your answer to the nearest hundredth, if necessary.?

Last Answer : First you can subtract 1020 from 1200 to find the amount of employees who were let go. This would give you 180. You then take 180 divided by the original number of employees (1200) to get 0.15. Multiplying 0.15 by 100 will show you that the company's workforce was decreased by 15%.

Description : A zoo has an average of 1020 visitors on Sundays and 480 on other days. The average number visitors per day in a month of 30 days beginning with a Sunday is. A) 5200 B) 570 C) 530 D) 450

Last Answer : B)  Since the month begins with a Sunday So there will be 5 Sundays I the month Therefore required average = [(1020*5)+(480*25)/30] =(5100+12000)/30 =17100/30 = 570

Description : What do you think of this computer: http://www.dell.com/us/en/home/notebooks/inspiron-1012/pd.aspx?refid=inspiron-1012&s=dhs&cs=19&~oid=us~en~29~laptop-inspiron-10_anav1~~?

Last Answer : There are a lot of netbooks on the market with similar specs. Read the reviews and buy by price. Try looking at the Asus EEE Netbooks on Amazon or Newegg.com, and reading the customer reviews. Dell is not the paragon that it once was, although things change and it may come back.

Description : I work in garments, I have to work till 1012 at night But the problem is that I can't get up in the morning. It hurts a lot. What can I do?

Last Answer : I would advise you to drink water. You need to drink nine to ten glasses of water daily. If you try to wake up a few days earlier, it may become a habit to get up earlier. However, it is normal ... Thus, after a few days, he took the target of 7 hours of sleep. You will succeed in this InshaAllah.

Description : The correct values of ionization enthalpies(in KJ `"mol"^(-1)`) of Si, P, Cl, and S respectively are: a)`786, 1012, 999, 1256` b)`1012, 786, 999, 1256

Last Answer : The correct values of ionization enthalpies(in KJ `"mol"^(-1)`) of Si, P, Cl, and S respectively are: ... . `786,1012,1256,999` D. `786,999,1012,1256`

Description : What is 1012.5 to nearest cent?

Last Answer : The answer depends on the units used for the given quantity. Itshould be plainly obvious to anybody that the answer for 1012.5dollars will be very different from that for 1012.5 Euros. So,without any information about the units for the given quantity, itis not possible to give a sensible answer.

Description : What is the mass in grams of 9.76 x 1012 atoms of naturally occurring sodium?

Last Answer : The mass is 1,62.10e-11.

Description : What is 1012 plus 812?

Last Answer : They add up to 1824

Description : Mahmood Ghaznvi made Punjab a part of his empire in: A. 1021 B. 1121 C. 1002 39 D. 1012

Last Answer : ANSWER: A

Description : What is the photon energy for an infrared wave with frequency of 1012 Hz? a. 10.6 x 1034 joules b. 6.63 x 10-34 joules c. 6.63 x 10-22 joules d. 10.6 x 1022 joules

Last Answer : c. 6.63 x 10-22 joules

Description : The laser frequency when the light has the wavelength 800 nm is ∙ a. 375 x 1012 Hz ∙ b. 475 x 1015 Hz ∙ c. 375 x 109 Hz ∙ d. 375 x 1018 Hz

Last Answer : d. 375 x 1018 Hz

Description : What is the photon energy for an infrared wave with frequency of 1012 Hz? ∙ a. 10.6 x 1034 joules ∙ b. 6.63 x 10-34 joules ∙ c. 6.63 x 10-22 joules ∙ d. 10.6 x 1022 joules

Last Answer : ∙ c. 6.63 x 10-22 joules

Description : When two semiconductors of p-and ntype are brought in contact, they form p-n junction which acts like a/an – (1) Conductor (2) Oscillator (3) Rectifier (4) Amplifier

Last Answer : (3) Rectifier Explanation: P-n junction is a device which flows current in one direction when it is forward biased and when it is reverse biased it doesn't flow any current through it. So it ... (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction.

Description : Silicon is used in which of the following? (1) Semiconductors (2) solar energy devices (3) transistors (4) All of these

Last Answer : (4) All of these Explanation: Silicon is a chemical element (its symbol in chemical formula expressions is "Si") that is present in sand and glass and which is the best known semiconductor material in electronic components. Its atomic number is 14.

Description : The dominant charge carriers in p-type semiconductors are: w) neutrons x) electrons y) protons z) holes

Last Answer : ANSWER: Z -- HOLES

Description : In N-type semiconductors the majority of the carriers are: w) holes x) electrons y) protons z) neutrons 

Last Answer : ANSWER: X -- ELECTRONS

Description : When two semiconductors of pand n-type are brought in contact, they form p-n junction which acts like a/an (1) Conductor (2) Oscillator (3) Rectifier (4) Amplifier

Last Answer : Rectifier

Description : What is the significant figures of 0.1020?

Last Answer : What is the answer ?

Description : After accounting for SDA, the net gain of energy from 100 gm of fat is about (A) 600 kcal (B) 780 kcal (C) 900 kcal (D) 1020 kcal

Last Answer : Answer : B

Description : Where is Tala Hydroelectric project, which is expected to generate 1020 MW power, located? (1) Arunachal Pradesh (2) Bhutan (3) Nepal (4) Himachal Pradesh

Last Answer : (2) Bhutan Explanation: Tala Hydroelectricity project is the biggest hydroelectric joint project between India and Bhutan so far, generating 4865 GWh/yr. Tala is located in Chukha Dzongkhag in western ... planned for June 2005, but because of geological problems this was delayed until March 2007.

Description : Calculate (1/10)18 - (1/10)20 = ? (a) 99/1020 (b) 99/10 (c) 0.9 (d) none of these

Last Answer : (a) 99/1020

Description : Where is Tala Hydroelectric project, which is expected to generate 1020 MW power, located ? (1) Arunachal Pradesh (2) Bhutan (3) Nepal (4) Himachal Pradesh

Last Answer : Bhutan

Description : Rs.1870 is divided into three parts in such a way that half of the first part, one-third of the second part and one-sixth of the third part are equal. The third part is A) Rs.510 B) Rs.680 C) Rs.850 D) Rs.1020 E) None of these 

Last Answer : Answer: D F/2 = S/3= T/6 T = 2S = 3F F + S + T = 1870 T( 1/3 +1/2 + 1 ) = 1870 T= 1870 x 6/11 = 170 x 6 = 1020 Or the third part is a multiple of 6 and is large

Description : Nandhini scored 996 marks out of 1200 marks and her elder brother kaviyarasan scored 1020 marks out of 1500 marks. Find the scored percentage which is better? a) 68% b) 83% c) 65% d) 85% e) 97%

Last Answer : Answer: A Percentage of marks scored by nandhini = (994/1200 × 100)  = (99400/1200)  = (994/12)  = 83 % Percentage of marks scored by kaviyarasan = (1020/1500 × 100)  = (102000/1500)  = (1020/15)  = 68 % Hence, the percentage marks scored by nandhini is better.

Description : Substances of conductivity between 10–10  10–20 (n m )–1 are: a) Insulators b) Semiconductors c)Super conductors d)Good conductors

Last Answer : a) Insulators

Description : he substances of conductivity of the order of 10–6 – 10–4 (m)–1 are : a) Insulators b) Super conductors c) Semiconductors d)Good conductors

Last Answer : d)Good conductors

Description : The mass of one Avogadro number of helium atom is (a) 1.00 g (b) 4.00 g (c) 8.00 g (d) 6.02 × 1023 g

Last Answer : Ans:(b)

Description : Mean drift velocity of electron in a copper wire having cross-sectional area 5.0 × 10-6 m2 carrying current of 1 A and having number density 8.5 × 1028 m3 is A. 0.015 mm s-1 B. 0.1 mm s-1 C. 0.5 mm s-1 D. 0.25 mm s-1

Last Answer : 0.015 mm s-1

Description : Number of conduction electrons per unit volume is A. electron number B. number density C. proton number D. neutron numbe

Last Answer : number density

Description : Calculate the mass of 12.044 × 1023 carbon atoms -Chemistry 9th

Last Answer : No. of moles of Carbon atoms = No. of atoms/Avogadro constant = 12.044 × 1023/6.022 × 1023 = 2 mole Mass of carbon atoms = No. of moles × atomic mass = 2 × 12 = 24 g

Description : Calculate the mass of 6.022 × 1023 molecule of Calcium carbonate (CaCO3) -Chemistry 9th

Last Answer : Molar mass (Molecular mass in gram) of CaCO3 = 40+12+3×16 = 100 g No. of moles of CaCO3 = No. of molecules/Avogadro constant = 6.022 × 1023/ 6.022 × 1023 = 1 mole Mass of CaCO3 = No. of moles × molar mass = 1 × 100 g = 100 g

Description : How many moles are in 4.9 x 1023 molecules of ZnCl2?

Last Answer : Feel Free to Answer

Description : How many grams are there in 7.4 x 1023 molecules of AgNO3?

Last Answer : 7.4x10^23 x ( 1 mol AgNO3/ 6.02x10^23) x (169.88g AgNO3/ 1 mol AgNO3)=2.1x10^2g AgNO3no of molecules=7.4x10^23Mr of AgNO3=169.88we can find the no of moles, thereforein 1mol there are 6.02x10^23 molecules7 ... the substance in gram:Mr x no of Mol= Mass in grams(7.4x10^23/6.02x10^23)x169.88= 2.1x10^2

Description : How many atoms of chlorine are present in 1.70×1023 molecules Cl2?

Last Answer : Chemistry

Description : Determine the dynamic range for a 10 bit sign magnitude code. A. 1023 B. 425 C. 511 D. 756

Last Answer : C. 511