If a magnetic substance is brought near the north or the south pole of a bar magnet
If a magnetic substance is brought near the north or the south pole of a bar magnet, it is: Options…
7 years ago
Physics
A susceptibility of a certain magnetic material is 400. What is the class
A susceptibility of a certain magnetic material is 400. What is the class of the magnetic material? Options (a) Diamagnetic…
7 years ago
A proton beam enters a magnetic field of 10⁻⁴ Wb/m² normally. If the specific charge
A proton beam enters a magnetic field of 10⁻⁴ Wb/m² normally. If the specific charge of the proton is 10¹¹…
7 years ago
A freely suspended bar magnet aligns itself in
A freely suspended bar magnet aligns itself in Options (a) A direction (b) A particular direction (c) Any direction (d)…
7 years ago
There is a ring of radius r having linear charge densityλ and rotating with a uniform
There is a ring of radius r having linear charge density λ and rotating with a uniform angular velocity ω.…
7 years ago
Magnetism of a magnet is due to
Magnetism of a magnet is due to Options (a) Cosmic rays (b) Large magnet at the centre of Earth (c)…
7 years ago
The radius of curvature of a convave mirror is 24 cm and the imager is magnified
The radius of curvature of a concave mirror is 24 cm and the imager is magnified by 1.5 times. The…
7 years ago
The focal length of the objective of a terrestrial telescope is 80 cm
The focal length of the objective of a terrestrial telescope is 80 cm and it is adjusted for parallel rays,…
7 years ago
An object is placed at a distance of 10 cm from a co-axial combination of two lenses
An object is placed at a distance of 10 cm from a co-axial combination of two lenses A and B…
7 years ago
A short linear object of length L lies on the axis of a spherical mirror of focal
A short linear object of length L lies on the axis of a spherical mirror of focal length f at…
7 years ago