Radiation and Dual Nature of Matter — Physics STD 12 Science — Question

Can the voltage drop across the inductor or the capacitor in a series LCR circuit be greater than the applied voltage of the a.c. source? Justify your answer.

Why do tyres have a better grip of the road while going on a level road than while going on an incline?

An electron and a proton are brought nearer; how does the potential energy of system change?

Explain : Electrostatic shielding.

Explain by graph how the electric field by thin spherical shell depends on the distance, of point from centre.

Derive an expression for (i) induced emf and (ii) induced current when a conductor of length l is moved with a uniform velocity, normal to a uniform magnetic field B. Assume the resistance of conductor to be R.

Considering the case of a parallel plate capacitor being charged, show how one is required to generalize Ampere’s circuital law to include the term due to displacement current.

Depict the field-line pattern due to a bar magnet.

Explain the lateral shift for a ray refracted from a glass slab with parallel sides.