Two concentric coils each of radius equal to 2π cm are placed at right angles
Two concentric coils each of radius equal to 2π cm are placed at right angles to each other. If 3A…
Two concentric coils each of radius equal to 2π cm are placed at right angles to each other. If 3A…
A cyclotron is used to accelerate Options (a) Only negatively charged particles (b) neutron (c) Both positively and negatively charged…
A proton beam enters a magnetic field of 10⁻⁴ Wb/m² normally. If the specific charge of the proton is 10¹¹…
A person wants a real image of his own, 3 times enlarged. Where should he stand in front of a…
Calculate the focal length of a reading glass of a person, if the distance of distinct vision is 75 cm…
Core of electromagnets are made of ferromagnetic material which has Options (a) low permeability and high retentivity (b) high permeability…
To observed diffraction, the size of the obstacle Options (a) should be much larger than the wavelength (b) has no…
A spherical shell of radius 10cm is carrying a charge q. If the electric potential at distance 5cm, 10cm and…
A parallel plate capacitor is charged and then isolated. The effect of increasing the plate seperation on charge, potential and…
Pick out the statement which is incorrect? Options (a) A negative test charge experience a force opposite to the direction…