The human brain comprises billions of nerve cells, which detect and transmit information to other nerve cells. Explore More: Human Brain Stay... View Article
UPSC Current Affairs Preparation: The Hindu Analysis Watch expert analysis of ‘The Hindu’ dated 07th January 2021. Important news and views to... View Article
Silicon and germanium have four valence electrons but at the given temperature germanium will have more free electrons and higher conductivity... View Article
If the bandgap is increased more energy is required to move an electron from the valence band to the conduction band. The bandgap increases with... View Article
Vibration is the back and forth movement of the object about the mean position. An object completes one cycle of vibration when it starts from... View Article
The frequency of oscillation can be calculated from the time period. The time period is the time taken for one oscillation. The frequency of the... View Article
Sound waves should be considered as a travelling wave but sound waves can form standing waves under special conditions. The sound waves forms... View Article
The electromagnetic waves have a wide range of wavelengths but our eye is sensitive to only a very narrow range. This narrow range of wavelengths... View Article
Free electrons exist in conductors. The atoms in conductors have loose electrons in the outermost shell or valence shell. These valence shell... View Article
The zero on a Kelvin scale is called the absolute zero. Absolute temperature is equal to minus 273-degree Celsius or 459.67 degrees Fahrenheit.... View Article
Inertia is a measure of mass. An object with smaller inertia will require a small force to accelerate at the same rate. Whereas, an object with... View Article
Ultrasonic waves are high-frequency sound waves. The frequency of sound waves is greater than 20kHz. These waves are longitudinal in nature,... View Article
Classical mechanics or Newtonian mechanics failed to explain the phenomenon like black body radiation, photoelectric effect, the temperature... View Article
The superposition theorem has certain limitations It is used to measure current and voltage but cannot be used to measure power Applicable... View Article
Standing waves are formed by the superposition of two waves travelling in the opposite direction. The two waves interfering must have an... View Article
For the superposition theorem to be applied to a network there are certain conditions to be met All the components of the circuit must be... View Article
Thermal expansion is the change in the length, area, volume and density of the material due to the change in temperature. Aluminium has the... View Article
The heat is conducted by the vibrations of atoms in the material. The vibration of the atoms depends on the arrangement of the atoms. In the... View Article
Thermal conductivity is the ability of the substance to conduct heat. There are different types of bricks. A good brick should have a low thermal... View Article
