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What is a p-n junction

Posted by Aman Saxena 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

N Aaditya 7 years, 1 month ago

Crystal of si or Ge having one end of p type and other end of n type semiconductor

1Thank You

ANSWER

What is volume charge distribution

Posted by Akshat Mishra 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Deepak Gupta 7 years, 1 month ago

q/V

0Thank You

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What is velocity selector?

Posted by Tannu Pandey 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Anuj Sharma 7 years, 1 month ago

V=E/B is formulae for velocity selector. it is a system which is used for selection of those particles moving with velocity V by passing it through mutual perpendicular magnetic and electric field

2Thank You

ANSWER

What is the verification of gauss law

Posted by Shriram Nema 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Answers of sample papers

Posted by Sangeet Lamba 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Neeraj Rawat 7 years, 1 month ago

scroll down the page then u will got answers

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Why magnetic field doesn't form closed loop

Posted by Abhishek Pathak 7 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Sayantani Chattopadhyay 7 years, 1 month ago

Magnetic field forms closed loops. Electric field does not, in case you mixed up.

0Thank You

Aditi Bhat 7 years, 1 month ago

Magnetic field forms closed loop

0Thank You

Meenakshi Sangwan 7 years, 1 month ago

Bcz there are no magnetic charges i.e monopoles

2Thank You

ANSWER

Use gauss law to derive the expression for the electric field due to a straight uniformly charge infinite line of charge

Posted by Shivani Dobal 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

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Practical of Ray and optics section

Posted by Ishan Shrivastava 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is meaning of charge

Posted by Akash Prasad 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Prachi Arora 7 years, 1 month ago

It is an intrinsic property of particles due to which cureent can be produced

2Thank You

ANSWER

What is the rest energy of a photon?. Is it zero!

Posted by Murugesan Palani 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Pragya Gupta 7 years, 1 month ago

E=hv

0Thank You

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Working of hydro power plant breeifly

Posted by Sonia Paruthi 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

A potentiometer wire ab. Of length 1m connected to a driver cell emf 3v when a emf of 1.5v used in the secondary ckt the blanc point found 60 cm on replacing blanc shift 80 cm cal unknown emf

Posted by Manoj Kumar 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Theory based on concave mirror

Posted by Jince Jinu 7 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Somil Dubey 7 years, 1 month ago

It is converging in nature

1Thank You

Raunak Himmatramka 7 years, 1 month ago

It is diverging in nature

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In optics, is it necessary " derivation of lens maker's formula from AB- initio" from board exam point of view??

Posted by Mayank K. Mahour 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Tannu Rani 7 years, 1 month ago

Yes it is very important

1Thank You

ANSWER

What is equipotential surfaces

Posted by Mansi Sharma 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Sumant Pandey 7 years, 1 month ago

Those imaginary surface on which potential are same; i.e.potential at all point on that surface are constant

2Thank You

ANSWER

Why magnetic field lines form close loop?

Posted by Ritik Panchal 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Ritik Kushwaha 7 years, 1 month ago

Because monopoles are not exist

1Thank You

ANSWER

Why does the earth rotates?

Posted by Kumar Verma 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

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Viva questions for physics

Posted by Anuksha V 7 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Rohit Kumar 7 years, 1 month ago

Its depend upon examiner mind . He can ask que. From whole syllabus or project work.

0Thank You

Amarjeet Singh 7 years, 1 month ago

which experiment u want ~??

4Thank You

ANSWER

State the properties of nuclear forces.write the relation between half life and decay constant of a radioactive nucleus.

Posted by Alisha Saini 7 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Sayantani Chattopadhyay 7 years, 1 month ago

1. Short ranged, 2. Charge independent, 3. Attractive , 4. Has exchange character and arises due to mason exchange, 5. Spin dependent.

1Thank You

Ritik Kushwaha 7 years, 1 month ago

Nuclear force are short range force. Nuclear force are noncentral force.

0Thank You

Anjana Sherawat 7 years, 1 month ago

Nuclear forces are charge independent and strong up to a short limit

1Thank You

ANSWER

Why current density is a vector quantity?

Posted by Rajeev Kumar 7 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Ritik Kushwaha 7 years, 1 month ago

J=I/A

0Thank You

Meenakshi Sangwan 7 years, 1 month ago

Bcz its having magnitude equal to current throgh a very small unit area ...the area being normal to the direction of flow of current and direction along the current .

4Thank You

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In a uniform electric field E, the potential difference between two points A and B is 1.0 volt. It is given that AB=4cm and angle is 60° with E . Find the fiels strength E

Posted by Sarmistha Sahoo 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Write the properties of electric lin

Posted by Dawa Tshering 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Pragya Gupta 7 years, 1 month ago

They dont pass on each other 2 they do not form closed loop

1Thank You

ANSWER

Find the focal length of a convex lens using two pin method u-v method

Posted by Vishal Bauri 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Expression for electric field at a point on equatorial line of electric dipole

Posted by Harman Gill 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Ayushmaan Jangid 7 years, 1 month ago

Kp÷r^3

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a potential diff of 100v is applied across 1m wire.calculate the average velocity of the electroan compare it with thermal velocity of 27c g

Posted by Dev Tripathi 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Ncert additional exercise's some questions are very difficult can they come in board exam??

Posted by Rajat Dhull 7 years, 1 month ago

CBSE > Class 12 > Physics

4 answers

Kuldeep ?? 7 years, 1 month ago

Yes in ncert every que is impotant. So which que you think is difficult you read it and then thik about that que that what is written in que and learn it.

1Thank You

Sakshi Singh 7 years, 1 month ago

Take both the advices.?

1Thank You

Rahul Semwal 7 years, 1 month ago

First try last year questions that would help you to build up for ncert.

1Thank You

Sakshi Singh 7 years, 1 month ago

Revise them once or twice but don't cram.

1Thank You

ANSWER

what are some common questions ask in physics board viva class 12