List of top Physics Questions

Electric field lines provide information about

The total electric flux coming out from stationary unit positive charge in air is

The force, acting on per unit charge is called

The net charge on a charged capacitor is

The motion of an electron inside a conductor is

Light year is equal to

The width of diffraction fringes is .......... to the width of interference fringes.

If T is time period and V is maximum speed of a charged particle in cyclotron, then

S.I. unit of permittivity is

Van de Graaff generator is an electrostatic machine which produces

If any ammeter is shunted, then the total resistance of the circuit

The temperature coefficient of a semi-conductor is

The binary equivalent of 25 is

In visible spectrum, which colour has larger wavelength ?

Which one of the following electromagnetic radiations has minimum wavelength ?

The phase-difference between current and voltage in only capacitive alternating current circuit is

The nucleus of any atom is made up of

In photoelectric effect, the photoelectric current is independent of

The concept of secondary wavelets was given by

When current in a coil changes from 5A to 2A in 0.1s then average voltage of 50V is produced. The self-inductance of the coil is

When a force \(\overrightarrow F = xy²\hat i + x²y\hat j N\) acts on a particle and moves it along a straight line from the origin to the point (4, 0), the work done is,

A point charge of $10\, \mu C$ is placed at the origin At what location on the $X$-axis should a point charge of $40 \, \mu C$ be placed so that the net electric field is zero at $x=2 \, cm$ on the $X$-axis?

Match List I with List II

LIST I		LIST II
A	Gauss's Law in Electrostatics	I	\(\oint \vec{E} \cdot d \vec{l}=-\frac{d \phi_B}{d t}\)
B	Faraday's Law	II	\(\oint \vec{B} \cdot d \vec{A}=0\)
C	Gauss's Law in Magnetism	III	\(\oint \vec{B} \cdot d \vec{l}=\mu_0 i_c+\mu_0 \in_0 \frac{d \phi_E}{d t}\)
D	Ampere-Maxwell Law	IV	\(\oint \vec{E} \cdot d \vec{s}=\frac{q}{\epsilon_0}\)

Choose the correct answer from the options given below:

A rectangular conducting loop of length 4 cm and width 2 cm is in the X-Y plane. It is being moved away from a thin and long conducting wire along the direction (\(\frac{\sqrt3}{2}\hat{x}+\frac{1}{2}\hat{y}\)) with constant speed v. The wire is carrying a steady current I = 10 A in the +ve X- direction. A current of 10 μA flows through the loop when it is at a distance d = 4 cm from the wire. If the resistance of the loop is 0.1 \(\Omega\). Then the value of v is ........m/s

The de Broglie wavelength of an electron having kinetic energy of 100 eV is