CBSE > Class 12 > Physics | CBSE Board | Homework Help

Ask questions which are clear, concise and easy to understand.

Ask Question

Important derivations of chapter-1 to 8

Posted by Dharuv Kumar 7 years, 3 months ago

1 answers

Pooja Sarkar 7 years, 3 months ago

1-EF at axial,EF at equitorial,Guass law 2-V at axial &equitorial,capacitor,change in capacitance with change in medium b/w the plates of it,&energy stored in capacitor. 3- relation b/w drift velocity & current density, ohm's law by drift velocity &current density, kirchoff's law. 4-cyclotron,Buot servart law, Mf at center of circular coil,Mf at axis of circular coil,Mf due to long straight wire, Ampere circutal law, Mf in torroid , force b/w current carrying wire,torque at coil, conversion of galvanometer to ammeter & voltmeter. 5- earths magnetism,hysteresis loop, 6- motional emf,lenz law & conservation of energy,application of eddy current,self & mutual induction,Ac generator. 7- Capacitor connected to ac,inductor connected to ac, resonance, LCR circuit,impedence,power in Ac curcuit,transformer 8- Different types of wave.

1Thank You

ANSWER

Principle of ac generator

Posted by Paavni Mittal 5 years, 8 months ago

CBSE > Class 12 > Physics

3 answers

Karishma Grewal 7 years, 3 months ago

Base on electromagnetic induction(EMI)

1Thank You

Amresh Kumar 7 years, 3 months ago

It is based on the principle of em indnduction with two split ring commutator.

1Thank You

Deepak Jindal 7 years, 3 months ago

It is based on electromagnetic induction(EMI)

1Thank You

ANSWER

Cbse llast five year physics solved paper

Posted by Pradyum Yadav 5 years, 8 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is the relevance of large value K(=81)for Water?

Posted by Inder Dhillon 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Karishma Grewal 7 years, 3 months ago

It give a prefect square √81 is 9

0Thank You

ANSWER

Explain microscpe

Posted by Ks Swami 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Aryan Rajpoot 7 years, 3 months ago

Device used in seeing microorganisms and cells

1Thank You

ANSWER

Can playing Clash of Clans be harmful to students of class-12th ? . Contact me at [email protected]

Posted by Anuj Kumar 7 years, 3 months ago

CBSE > Class 12 > Physics

3 answers

Anuj Kumar 7 years, 3 months ago

Thanks mates to answer,

1Thank You

Aryan Rajpoot 7 years, 3 months ago

Yes as it is too much addictive for students

1Thank You

Avinash Avi 7 years, 3 months ago

Yes

1Thank You

ANSWER

What will be interference pattern if we use white source of light instead of a monocromatic source of light

Posted by Karishma Grewal 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Why always current flow in multiple of 11?

Posted by Prateek Srivastava 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is wavefront ?

Posted by Sumit Kumar Sahu 7 years, 3 months ago

CBSE > Class 12 > Physics

3 answers

Karishma Grewal 7 years, 3 months ago

It is a locus of vibrating partical which are in same phase

1Thank You

Inshita Bamba 7 years, 3 months ago

wavefront is a continuous locus of all the points where the wave vibrations occurs in the same phase.

1Thank You

Sahil Kumar 7 years, 3 months ago

Wavefront defined as the continuous locus of all such particle of the medium which are vibrating in same phase at any instant

4Thank You

ANSWER

Two wires A and B have the same length equal to 44 cm and carry a current of 10 A each. Wire A is bent into a circle and wire B is bent into a square. . (i) Obtain the magnitudes of the fields at the centres of the two wires. (ii) Which wire produces a greater magnetic field at its centre?

Posted by Vipendra Singh 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

F=qB

Posted by Djddjd Jain 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Derivation of power of ac circuit

Posted by Deepak Kumar 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Why the Red light have minimum deviation ? and Violet has large ?

Posted by Ravi Kumar 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Karishma Grewal 7 years, 3 months ago

Because red light have maximum wavelenght

0Thank You

ANSWER

What are imp. Derivations of ch8 physics with loution.

Posted by Arpit Chaudhary 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Ravi Kumar 7 years, 3 months ago

* Modification of ACL * Energy density of EM wave and many more ...

0Thank You

ANSWER

A short bar magnet of moment of Inertia I having magnetic dipole moment M is kept in external magnetic field B it is rotated slightly on a very small angle .find out the formula of its time peeiod?

Posted by Charu Jain 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is the Dimension of inductance??

Posted by Vishal Kumar 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Aisha Gupta 7 years, 3 months ago

ML²T–²A–²

2Thank You

ANSWER

What is wavelength

Posted by Pawan Kumar 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Manvi Sharma 7 years, 3 months ago

Distance travelled by wave in 1second

1Thank You

ANSWER

What is the angle of deviation of prism if incident ray is 50 degree with diagram

Posted by Nikhil Tiwari 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

1) state lenz law. the enery E , required to build up a steady current I in a given coil , varies with I in the manner shown . Calculate the self inductance of the coil

Posted by Shagaf Kanekar 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Akshat Sharma 7 years, 3 months ago

Lenz laws state that induced current appear in such a direction that it will oppose the change in magnetic flux which is responsible for its induction .

3Thank You

ANSWER

How to study physics 1st book in just 5 days I have my exam on 19 Sept... Please help me... ??

Posted by Aryan Rajput 7 years, 3 months ago

CBSE > Class 12 > Physics