A diode is a device that allows current to flow in only one direction. It has two terminals, the terminals are anode and cathode. How do you test... View Article
How does Newton's 3rd law apply to rockets? According to Newton’s third law of motion to every action, there is an equal and opposite reaction.... View Article
Why can light travel in a vacuum? Light is an electromagnetic wave that does not require a medium for transmission. Photons in the light have the... View Article
LED stands for light-emitting diode. LED is just a diode that emits light when electricity passes through it. Is an LED a coherent light source?... View Article
Which phenomenon is not common to sound and light waves? The phenomenon that is not common to sound waves and light waves is polarization.... View Article
Wavefronts are rays used in the graphical representation of wave behaviour. Wavefront is defined as the locus of all the points with a constant... View Article
Does wavelength change after diffraction? Diffraction is a phenomenon that occurs in the same medium, therefore there is no change of wavelength... View Article
The electrical resistivity of metal drops to zero at a particular temperature called critical temperature. A superconductor is a conductor that... View Article
The dielectric constant or relative permittivity is given as the ratio of the permittivity of the substance to the permittivity of a vacuum.... View Article
Is a potentiometer analog or digital? Potentiometers can be both analog and digital. Analog potentiometer is a three-terminal resistor in which... View Article
What are the advantages of a potentiometer? Potentiometer works on zero deflection method so the possibility of error is very small. It is a... View Article
Wheatstone’s bridge is an arrangement of four resistances used for measuring one of them in terms of the other three. Why is Wheatstone's bridge... View Article
Einstein deduced the inter-relationship between mass and energy using the postulates of the special theory of relativity and emphasised on a... View Article
Does a pendulum swing faster with more weight? No, increase in the weight of the bob will not affect the swing rate. The pendulum does not swing... View Article
Kinetic energy is the energy possessed by the body with respect to its motion. It depends on the mass and the velocity of the object. The... View Article
The establishment of India’s diplomatic relations with Malaysia took place in 1957. Recently, the relations between India-Malaysia are being... View Article
UPSC Current Affairs Preparation: The Hindu Analysis Watch expert analysis of ‘The Hindu’ dated 2nd December 2020. Important news and views to... View Article
As fluorine is the most electronegative element in the periodic table, it should be −1 . F is more electronegative than Oxygen so it will... View Article
Pyramid of biomass is inverted in an aquatic ecosystem because the biomass of fishes far exceeds the biomass of phytoplanktons. Biomass pyramids... View Article
Water is called the 'universal solvent' because it is capable of dissolving more substances than any other liquid. It is one of the important... View Article
