Half-life is the time taken by half the original number of parent atoms in the radioactive substance to undergo disintegration. What is the... View Article
What causes magnetic susceptibility? The interaction of the nuclei and the electrons with the external magnetic field causes susceptibility.... View Article
Resonance is a phenomenon of an increase in the amplitude that occurs when the frequency of the applied force is equal to the natural frequency... View Article
Why is there a negative in F =- kx? The minus or negative sign is there in F= -kx by convention. According to Hooke’s law the restoring force F... View Article
What happens when a transverse wave is reflected? When the transverse wave travels from the rarer medium to the denser medium, it gets reflected... View Article
Which is a reverse biased diode? Zener diodes are always operated as reverse-biased diodes. Reverse bias is when the p-side of the diode is... View Article
Magnetic flux through a surface is the number of magnetic lines of force passing through the surface in the normal direction. Magnetic flux... View Article
In which mirror magnification is negative? Magnification is negative in a concave mirror. The magnification of a concave mirror is given by the... View Article
What is Faraday's law and Lenz law? Faraday’s laws describe how an electric current produces a magnetic field and conversely how a change in the... View Article
How do you determine boiling point? The boiling point can be determined from the type of molecules that make up the liquid. If the intermolecular... View Article
Why speed of sound does not depend on pressure? The expression for the speed of sound in an ideal gas is given by γ is the adiabatic index... View Article
When a book is placed on a table, two forces act on the book. The downward force due to the weight of the book and the upward normal force. Here... View Article
BJT Stands for bipolar junction transistor. It is a three-terminal semiconductor device where the charge is carried out using both electrons and... View Article
The resultant of cross product of two vectors is a vector quantity. Vector cross product represents two vectors are orthogonal or perpendicular... View Article
The dot product of two unit vectors is always equal to zero. Therefore, if i and j are two unit vectors along x and y axes respectively, then... View Article
If i, j and k are unit vectors along x-axis, y-axis and z-axis respectively, then i.i = j.j = k.k = 1 And i.j = j.k = k.i = 0 Learn more... View Article
Distance is a scalar quantity and not a vector quantity as it has only magnitude. It means when object moves, its direction does not matter only... View Article
If we toss three coins, then total number of outcomes is equal to: 23 = 8 The sample space for three coins is given by: S = { ( H , H , H ) ,... View Article
To find the unit vector in the same direction of another vector, we have to divide the vector by its magnitude. For example, vector A = [3,6,1]... View Article
