State the properties of electric lines of force, (i) Electric field lines c...

(i) Electric field lines come out of positive charge and go into the negative charge. (ii) Tangent to the field line at any point gives the direction of the field at that point.

Electromagnetic induction, The structure of a simple d.c. motor and explain...

The structure of a simple d.c. motor and explain briefly how it works

What is alpha decay and beta decay, The graph below shows a sequence of alp...

The graph below shows a sequence of alpha and beta decays, labeled 1, 2, 3, and 4. Consult Table 30-1 as required.   a) Which shows alpha decays, and which represen

An experiment with a floating candle, Put a nail in the lower end of a cand...

Put a nail in the lower end of a candle. The nail should be just the right weight to make the candle float with its top a little above the surface of the water. Float the candle an

Person travels faster than light in a space shuttle, What happens if a pers...

What happens if a person travels faster than light in a space shuttle?  Ans) Interstellar space travel is manned or unmanned travel among stars. The concept of interstellar trav

Relation among electric force and electric field, In an electric field   a ...

In an electric field   a charge (Q) experiences a force F = QE. If charge is positive then force is directed in the direction of field whereas if charge is negative force acts on i

Stern-gerlach experiment, Stern-Gerlach experiment (O. Stern, W. Gerlach; 1...

Stern-Gerlach experiment (O. Stern, W. Gerlach; 1922): An experiment which demonstrates the features of spin (intrinsic angular momentum) as a different entity in spite of orb

Decade resistor, DECADE resistors are wire wound resistors. These are wound...

DECADE resistors are wire wound resistors. These are wound on cards moulded on round a switch of low contact resistance. Alloys used for wire are Manganin, minalpha, etc. Bifilar w

Kinematics and dynamics, The part of mechanics which works with the explana...

The part of mechanics which works with the explanation of the motion of an object without taking reason of the origin is known kinematics. While, the study of the motion of an obje

Michelson interferometer diagram,