Force between two magnetic poles, The force between two magnetic poles divi...

The force between two magnetic poles divided by a distance ‘d' in air is ‘F'. At what distance between them the force becomes doubled?

Will we always see a difference in brightness along an optic, Will we alway...

Will we always see a difference in brightness along an optic? Not essentially so. The human imagine system appreciates illuminance grades into a logarithmic fashion and when th

Vectors, The resultant of two forces 3P and 2P is R. If the first force is ...

The resultant of two forces 3P and 2P is R. If the first force is doubled then the resultant is also doubled. then the angle between the two forces us. plz xplain with the solution

Detectors and dielctrics, 1. What is the principle of gas filled detectors?...

1. What is the principle of gas filled detectors? 2. What are nuclear radiations or particle detectors?

Important parts of an ac dynamo, 1)The armature ABCD consists of a copper w...

1)The armature ABCD consists of a copper wire wound on cylindrical soft-iron core.The armature can be rotated horizontal axis perpendicular to magnetic field. 2)NS is permanent

Special resistor materials: carbon, Carbon: Atomic number ...

Carbon: Atomic number 6 Symbol C Atomic weight 12.011 Discovery Carbon exists fre

Self Gravitational PE, Self Gravitational Potential Energy of matter formin...

Self Gravitational Potential Energy of matter forming a thin uniform shell of mass M and radius R is-

Forces and nature,

State electric field lines in good metallic conductors, Electric field line...

Electric field lines In good metallic conductors: In good metallic conductors:  (i)   Static electric fields are not there (zero inside a conductor) (ii)  Charges reside

What is the difference between a lens and a mirror, What is the difference ...

What is the difference between a lens and a mirror? A mirror is a reflective surface. Light passes by the glass and hits the silver backing, reflecting off of it. (The angle of