Magnetic Effect of Current — Physics STD 12 Science — Question

Electroplating does not help in

A thin slice is cut out of a glass cylinder along a plane parallel to its axis. The slice is placed on a flat glass plate as shown. The observed interference fringes from this combination shall be

For extrinsic semiconductors; when doping level is increased;

During a nuclear fission reaction:

When a potential difference is applied across the ends of a linear metallic conductor

A potentiometer has uniform potential gradient across it. Two cells connected in series
(i) to support each other and
(ii) to oppose each other are balanced over 6m and 2m respectively on the potentiometer wire.
The e.m.f.’s of the cells are in the ratio of

An electron enters a chamber in which an uniform magnetic field is present as shown in figure. Ignore gravity. During its motion inside the chamber 

The given truth table is of

In Young’s double slit experiment, the distance between the two slits is made half, then the fringe width will become