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CBSE - XII Science - Physics - Magnetism and Matter
Sir I just want to ask..how to resolve the components of vector..means where to take sin and cos theta...it's troubling me so much please provide the solution with some examples..if there's any rule please mention it
Asked by ayushi
10th September 2016,
3:19 PM
CBSE - XII Science - Physics - Magnetism and Matter
what happens to the magnetic dipole moment of a bar magnet if we cut the bar magnet diagonally?
Asked by sai
27th February 2016,
8:55 PM
CBSE - XII Science - Physics - Magnetism and Matter
What are the most common and the most important questions that can be asked in physics pracical exam class 12 cbse?
Asked by Apoorva Sakshi
1st February 2016,
7:23 PM
CBSE - XII Science - Physics - Magnetism and Matter
Why the Magnetic declination is denoted by 
(which is variable) infact we know that the angle between Magnetic and Geographical meridian is always 11 (degree) ?
(which is variable) infact we know that the angle between Magnetic and Geographical meridian is always 11 (degree) ?
Asked by Deepak Singh
27th July 2015,
3:31 PM
CBSE - XII Science - Physics - Magnetism and Matter
A lead bullet at 27 degree celsius just melts when stopped by an obstacle.Assuming that 25% heat is absorbed by the obstacle,find the velocity of the bullet at the time of striking.( mp of lead = 327 degree celsius,specific heat of lead = 0.03 cal per gram per degree celsius and latent heat of lead = 6 cal per gram)
Asked by Bholanath Beura
10th October 2014,
9:40 AM
CBSE - XII Science - Physics - Magnetism and Matter
A bar magnet M is dropped so that it falls vertically through Page 3 of 6 the coil C. The graph obtained for voltage produced across the coil vs. time is as shown in the figure (i) Explain the shape of the graph (ii) Why is negative peak longer than the positive peak?
Asked by inderjeet.saluja
25th August 2014,
9:06 PM
CBSE - XII Science - Physics - Magnetism and Matter
To describe the magnetic field of earth at a point on its surface, we need to specify three elements. Name and defie those three elements
Asked by Kalindi Varma
15th March 2014,
9:06 PM
CBSE - XII Science - Physics - Magnetism and Matter
A small compass needle of magnetic moment m is free to turn about an axis perpendicular to the direction of uniform magnetic field B. The moment of inertia of the needle about the axis is I. The needle is slightly disturbed from its stable position and then released. Prove that it executes simple harmonic motion. Hence deduce the expression for its time period. (b) A compass needle, free to turn in a vertical plane orients itself with its axis vertical at a certain place on the earth. Find out the values of (i) horizontal component of earths magnetic field and (ii) angle of dip at the place
Asked by sujata shahid
3rd March 2014,
9:37 PM
CBSE - XII Science - Physics - Magnetism and Matter
maam i am confused between the terms earth's field and resultant field in earth magnetism. Can u clearly explain me the difference between this?
Asked by DIVYA GARG
3rd March 2014,
8:05 PM
CBSE - XII Science - Physics - Magnetism and Matter
what are the properties of field lines ?
Asked by Upendra Ks
26th February 2014,
9:15 PM
