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# Draw up a Fixture of 6 teams on cyclic method.

Posted by Himanshi Phiwal 4 years, 3 months ago

CBSE > Class 12 > Physics

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Draw A fixture of 21 teams on knock-out basis.

Posted by Himanshi Phiwal 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Preeti Dabral 4 years, 3 months ago

In this type of tournament, all the contestants are eliminated until only one winner is left at the end. The team which is defeated once autometically gets eliminated immediately from the tournament It means defeated team not get a second opportunities.

fixture of 21 teams

number of team = 21

Total number of matches = n-1 = 21-1 = 20
Total no of rounds = Nearest power of two of 21 = {tex}(2)^2{/tex}= 4
Number of teams in upper half{tex} = \frac { N + 1 } { 2 } = \frac { 21 + 1 } { 2 } = 11{/tex}
Number of teams in lower half{tex}= \frac { N - 1 } { 2 } = \frac { 21 - 1 } { 2 } = 10{/tex}
Total number of byes = Next power of two - total teams = 32 - 21 = 11 byes
number of byes in upper half={tex}= \frac { nb - 1 } { 2 } = \frac { 11 - 1 } { 2 } = 5{/tex}
number of team in lower half = {tex}= \frac { nb -+1 } { 2 } = \frac { 11 +1 } { 2 } = 6{/tex}

total number team in each quarter =

= 1st Quarter	= Q+1 = 5+1 = 6 teams
= 2nd Quarter	= Q+0 = 5+0 = 5 teams
= 3rd Quarter	= Q+0 = 5+0 = 5 teams
= 4th Quarter	= Q+0 = 5+0 = 5 teams

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A proton experiences the greatest force as it moves with a speed of 2.0 × 107 ms –1 towards east in a magnetic field. The force is vertically upward and has a magnitude of 1.09 × 10–12 N. What is the magnitude and direction of magnetic field

Posted by Harshit Joshi 4 years, 3 months ago

CBSE > Class 12 > Physics

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What is bigger than God, more evil than a demon, that is with a poor person, but a rich person needs it, if you eat it, you will die?

Posted by ?⚡Her?️⚡? 4 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

?⚡Her?️⚡? 4 years, 3 months ago

Today's episode is super suspense and awaited
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Dammu Pranit 4 years, 3 months ago

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Two straight wires

Posted by Md. Sadiq Ahmed 4 years, 3 months ago

CBSE > Class 12 > Physics

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Tanmay Sengar 4 years, 3 months ago

What?

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What is the basic difference between magnetic lines of force and electric lines of force

Posted by Rishav Mudgal 4 years, 3 months ago

CBSE > Class 12 > Physics

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Preeti Dabral 4 years, 3 months ago

Basic difference between an electric line of force and magnetic lines of force is that the former is discontinuous and the latter is continuous or endless. Reason: No electric lines of force exist inside a charged body but magnetic lines do exist inside a magnet.

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Give me information of ch 2 deleted portion .

Posted by Tanushree Kumawat 4 years, 3 months ago

CBSE > Class 12 > Physics

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Describe the method converting a galvanometer in to ammeter under following points. 1. Lebelled diagram. 2. principle

Posted by Atul Sharma 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Bhumi Ka 4 years, 3 months ago

galvanometer is converted into an ammeter by connecting a low resistance in parallel with the galvanometer. This low resistance is called shunt resistance S. The scale is now calibrated in ampere and the range of ammeter depends on the values of the shunt resistance

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What is N type of semi conductor

Posted by Savan Kumar Sahu 4 years, 3 months ago

CBSE > Class 12 > Physics

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Chaudhary Shaab 4 years, 3 months ago

They are formed when silicon is doped with electron rich impurity like group 15 elements. The increase in conductivity is due to the negatively charged electrons.

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Define an ideal electric dipole. Give an example. b) Derive an expression for the torque experienced by an electric dipole in a uniform electric field. What is net force acting on this dipole. c) An electric dipole of length 2cm is placed with its axis making an angle of 600 with respect to uniform electric field of 105N/C. If it experiences a torque of 8√3 Nm, calculate the (i) magnitude of charge on the dipole, and its potential energy.Read more on Sarthaks.com - https://www.sarthaks.com/969059/define-ideal-electric-dipole-give-example-derive-expression-torque-experienced-electric

Posted by Harish Sekar 4 years, 3 months ago

CBSE > Class 12 > Physics

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Give expression for the speed of light in a medium in terms of speed of light in vaccum and the critical angle for the medium

Posted by Simaran Patel 4 years, 3 months ago

CBSE > Class 12 > Physics

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A wire is bend from a ring

Posted by Avishkar Walunj 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Chaudhary Shaab 4 years, 3 months ago

Read the question carefully

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So well i was studying chapter -2 of physics and i got confused in 2.2 electrostatic potential So in it v=electrostatic potential which is equal to work done in bring a charge from a point to another And then v=w/q I dont know why q is there. No video on yt explained this Plz help

Posted by Tanush Gupta 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Chandni Maithil 4 years, 3 months ago

v= w/q means that potential difference is the amount of work done per unit test charge. q is the test charge.

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State Kirchhoff rule

Posted by Atharva Verma 4 years, 3 months ago

CBSE > Class 12 > Physics

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Preeti Dabral 4 years, 3 months ago

At any junction of circuit elements, the sum of currents entering the junction must equal the sum of currents leaving it.

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Sher Singh 4 years, 3 months ago

Kirchoff rules 1.First rule: The sum of all the currents meeting at junction is always equal to zero. 2.Second rule: In a closed loop the alzebric sum of emfs is equal to alzebric sum of product of respective currents and resistance flowing through it

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Tec Om 4 years, 3 months ago

At the junction, the current entering in the junction is equal to the current leaving the junction

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What is the effect of motion on charge q and a mass m of an electron moving with a speed of 10^4 m/s

Posted by Tripti Goyal 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Preeti Dabral 4 years, 3 months ago

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What is potential gradient?????

Posted by Riya Verma 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Preeti Dabral 4 years, 3 months ago

The potential gradient represents the rate of change of potential along with displacement. In other words, it represents the slope along which potential is changing. ... Potential - The potential between 2 points can be defined as the difference between the electric potential energies between the 2 points.

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Electric dipole moment of cuso4 molecule is 3 × 10^- 32 cm .find the separation between copper and sulphate ions

Posted by Biswabandhu Sahoo 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Preeti Dabral 4 years, 3 months ago

We know , dipole Moment = charge × distance between charges . e.g P = Q × D given , P = 3.2 × 10-³² Cm and charge Cu+2 SO4-- Q = charge of 2 electrons so, 3.2 × 10-³² = 2× 1.6 × 10^-19 × D D = 10^-32+19 m = 10^-13 m hence , distance between Cupper and sulphate ions = 10^-13m

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What is the total positive or negative charge present in 1 molecule of water

Posted by Biswabandhu Sahoo 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Preeti Dabral 4 years, 3 months ago

In one molecule of water, there are 2 atoms of hydrogen and 1 atom of oxygen. In the hydrogen atom, there is one positively charged proton and one negatively charged electron. In total there are 2 positive charges and 2 negative charges from the hydrogen side.

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In a uniform electric field of strength E a charged particle Q moves from point A to point B in the direction of the field back from B to A . Calculate the ratio of the work done by the electric field in taking the charged particle from A to B and from B to A

Posted by Biswabandhu Sahoo 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Preeti Dabral 4 years, 3 months ago

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What is meant by quantization of electric charge

Posted by Tikeswari Barik 4 years, 3 months ago

CBSE > Class 12 > Physics

3 answers

Kishor Kumar 4 years, 3 months ago

Are bhai.... quantization means fixed .....charge kabhi v aada nhi hota..na hi dedh ya dhai hota h

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Priyanshi Mitra 4 years, 3 months ago

Sune electron and proton are basic fundamental property of matter so quantization of charge is an integral multiple of electron that can be transferred from one body to another

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Prachi Agarwal 4 years, 3 months ago

Quantization is the amount of charge that occur in discrete amount instead of continuous amount. It is the intregal multiple of a charge i e. Q= ne

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The electrostatic force on a small charge sphe

Posted by Tikeswari Barik 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Tikeswari Barik 3 years, 11 months ago

Gravitational field potential electric field are both as well as same

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An electron is separated from a proton by a distance of 0.55 arm strong calculate the electric field at the location of the electron

Posted by Naven Kumar Kumaran 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Priyanshi Mitra 4 years, 3 months ago

9*10^9 *1.6*10^-19/0.55*10^-10

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Sl unit of magnetic dipole moment?

Posted by Atharva Verma 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Shakhit Raj 4 years, 3 months ago

Ampere-square metre

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No two electric lines of force intersect each other .why?

Posted by Sandeep Kaur 4 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Priyanshi Mitra 4 years, 3 months ago

Because they produce two direction which is absurd

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Tanya Maheshwari 4 years, 3 months ago

Because if they would, then at the point of intersection there would be two diresctions of the field lines which is not possible.

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The formation of mirage is explained by

Posted by Sandeep Kaur 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Tanya Maheshwari 4 years, 3 months ago

It is explained by refraction of light.

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Is NCERT exemplar beneficial for board exams???

Posted by Simranjit Kaur 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Atharva Verma 4 years, 3 months ago

Yes of course

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Two infinitely long straight uniformly charged thin wires having linear charge densities "-80/9*10^" "-12" Cm^ "-1;and" + 5 * 10 ^ "-12" * C * m ^-1 are kept in XY plane. Find the magnitude and direction of the net electric field at the point A (3, 4) where space coordinates are in cm

Posted by H V 4 years, 3 months ago

CBSE > Class 12 > Physics

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What is effect of temperature on drift velocity

Posted by Anushka Sahu 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Shreya Singh 4 years, 3 months ago

An increase in temperature causes atoms to vibrate more, which increases the number of collisions electrons have on their way through the wire and decreases the drift velocity.

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Capacitor is charged with battery removed and a dielectric is placed between its plates explain what will happen to 1. Charge 2. Potential difference 3. Electric field in between plates 4. Energy stored in the plates of a parallel plate capacitor

Posted by Subhanshi _ 4 years, 3 months ago

CBSE > Class 12 > Physics