For heavy nuclei, the protons on either side of the nucleus repel each other due to electrostatic repulsion. Hence the nuclear force becomes weak... View Article
Coulomb’s law is not a universal law. Coulomb's law is true for point charges and not for charge distributions. As the law works only during... View Article
Screw gauge can be used only for the external measurement while vernier caliper can be used for both external and internal measurement. The least... View Article
The threshold wavelength of a photo material is the maximum wavelength of incident radiation above which the photoelectric emission completely... View Article
Gamma rays are extremely harmful to external radiations. They can penetrate through the barriers that can stop alpha particles and beta... View Article
Distance is the measure of how far apart objects are. The distance between the two objects can never be negative. The distance between the two... View Article
The electric field is normal or perpendicular to the surface of the conductor. If they are not normal then there will be a component of the... View Article
The electric dipole moment is the measure of the separation of positive charge and the negative charge. The electric dipole moment is a vector... View Article
The galvanometer is a very sensitive device. For a small current of few microamperes, the galvanometer deflection will be maximum. Hence, it may... View Article
The electric field can be made uniform between the parallel plates of the capacitors if the plates are separated by a very small distance. The... View Article
The energy is stored in the spring as elastic potential energy. The elastic potential energy stored in the spring is equal to the work done to... View Article
The principle of increase of entropy is that entropy always increases and remains constant only in a reversible process. The entropy of the... View Article
Yes, light carries momentum. Light does not have mass but has momentum. The momentum of light is in the form of energy. For the energy of the... View Article
No, sound travels much slower than the speed of light. The speed of sound in air is about 340 metres per second. Whereas, the light will travel... View Article
Astronomer and mathematician Ptolemy thought that the earth was in the centre of the universe. In the 4th century, two great philosophers Plato... View Article
Copper is not a semiconductor. Copper is used as interconnects in silicon integrated circuits to reduce consumption of powers and propagation... View Article
A transformer is not designed to convert AC to DC or DC to AC. The transformer can step-up or step -down current. A transformer that increases... View Article
Uncertainty means the lack of sureness or having a doubt. Heisenberg’s uncertainty principle in quantum mechanics. It is the principle of... View Article
A conductor is constructed using two conducting plates with an insulator in between. When a DC voltage is applied on a capacitor there will not... View Article
Inductors will not allow any sudden change in current, due to self-induced EMF within the circuit by the magnetic field. The voltage developed... View Article
