Coulomb’s law is not a universal law since it works only for point charges and not for the distribution of charges. Since the law works only... View Article
On a hollow conductor, the charges entirely reside on the surface of the conductor. The Coulomb’s force between the charges results in the mutual... View Article
Atom is much larger than a neutron. An atom consists of a nucleus (protons and neutrons) and electrons going around the nucleus in various... View Article
Heat cannot be conducted through the vacuum since conduction will happen only when the molecules will collide. Heat transfer through vacuum takes... View Article
The force between two alpha particles is the Coulomb’s force of repulsion. The alpha particle has the same charge and therefore they repel each other.... View Article
Atoms should have protons and an equal number of electrons to be called an atom. If the number of protons and electrons are not equal in an atom... View Article
The light rays passing through the concave lens get refracted and the rays bend away from the principal axis. The image formed will appear... View Article
The work function of a photo metal is the minimum energy required to liberate an electron from the metal surface. The gain in the kinetic energy... View Article
Thermodynamics is the study of energy relationships involving heat, mechanical energy and other forms of energy. The development in the science... View Article
In the normal operation of the transistor, the emitter-base junction is forward biased and the collector-base junction is reverse biased. The... View Article
No, two diodes connected back to back cannot be used as a transistor. A PN diode will have equal doping on both sides, but for a transistor, the... View Article
The impulse-momentum theorem states that the rate of change of momentum of an object is equal to the impulse applied to it. This is logically... View Article
The inherent speed of an object is dependant on the inertia. The smaller the inertia, the greater the speed. When the inertia reduces to zero,... View Article
When you need accurate measurements micrometres are used instead of a calliper. The least count of the calliper is 0.1 mm while the least count... View Article
The Planck’s constant in the Heisenberg uncertainty principle is very small such that the uncertainties in position and momentum of small objects... View Article
For the photoelectric effect to occur, the energy of the photon should be greater than the work function. When the wavelength of the incident... View Article
In interference, maxima is a point where two crests or two troughs of two different waves meet each other and as a result, reinforce each other.... View Article