List of top Physics Questions on Magnitude and Directions of a Vector

If the maximum number of neighbours of a nucleon within the range of nuclear force is \( p \) and \( k \) is a constant, then the binding energy per nucleon is approximately:
In a single slit diffraction experiment, the width of the slit and the wavelength of the light are respectively 5 mm and 500 nm. If the focal length of the lens is 20 cm, then the size of the central bright fringe will be
Torque on a coil carrying current \( I \) having \( N \) turns and area of cross section \( A \) when placed with its plane perpendicular to a magnetic field \( B \) is:
The reactance of an induction coil of 4 H for a dc current (in \( \Omega \)) is:
A wave with a frequency of 600 Hz and wavelength of 0.5 m travels a distance of 200 m in a time of:
The terminal velocity of a small steel ball falling through a viscous medium is:
Which one is an INCORRECT statement?
The current flowing from p to n side in a pn junction diode irrespective of biasing is termed:
Magnitude of drift velocity per unit electric field is known as:
The ratio of the magnitudes of electrostatic force between an electron and a proton separated by a distance \( r \) to that between a proton and an alpha particle separated by the same distance \( r \) is:

Currents of 10 A and 20 A are passed in two long parallel wires A and B, as shown in the figure. A wire C of 15 cm length is placed just in between these two wires, in which 5 A of current is passed. Then what will be the force acting on the wire C? 

(i) Calculate the number of turns in the secondary coil.

(ii)Input power.

What is the magnitude of the current \( i \) in the given circuit?