An iron rod of volume 10⁻⁴ m³ and relative permeability 1000 is placed inside a long
An iron rod of volume 10⁻⁴ m³ and relative permeability 1000 is placed inside a long solenoid having 5 turns/cm.…
7 years ago
BCE2012
The horizontal component of earth’s magnetic field at a place is 3×10⁻⁴ T
The horizontal component of earth's magnetic field at a place is 3x10⁻⁴ T and the dip is tan⁻¹ (4/3). A…
7 years ago
If the dipole moment of a short bar magnet is 1.25 A-m², the magnetic field on its
If the dipole moment of a short bar magnet is 1.25 A-m², the magnetic field on its axis at a…
7 years ago
The diameter of the eye ball of a normal eye is about 2.5 cm. The power of the eye
The diameter of the eye ball of a normal eye is about 2.5 cm. The power of the eye lens…
7 years ago
If the half-life of a material is 10 yr, then in what time, it becomes 1/4th part
If the half-life of a material is 10 yr, then in what time, it becomes 1/4th part of the initial…
7 years ago
If a mass of 20g having charge 3.0 mC moving with velocity 20ms⁻¹ enters a region
If a mass of 20g having charge 3.0 mC moving with velocity 20ms⁻¹ enters a region of electric field of…
7 years ago
If two charges +4e and +e are at a distance x apart, then at what distance charge q
If two charges +4e and +e are at a distance x apart, then at what distance charge q must be…
7 years ago
Which one of the following statements is not correct in case of a semiconductor?
Which one of the following statements is not correct in case of a semiconductor? Options (a) Temperature coefficient of resistance…
7 years ago
A wire having resistance 12Ω is bent in the form of an equilateral triangle.
A wire having resistance 12Ω is bent in the form of an equilateral triangle. The effective resistance between any two…
7 years ago
When current I is flowing through a conductor, the drift velocity is v.
When current I is flowing through a conductor, the drift velocity is v. If the value of current through the…
7 years ago