List of top Physics Questions asked in JEE Main

Two identical particles each of mass m, move in circular path due to their own mutual gravitational force. Find the velocity of the particle if the radius of the circular path is a.
Suppose a situation in which two planets orbits around the sun in the same orbit. If the mass of plant 1 is twice the mass of planet 2, then what do they have same?
An object weighs 200N at the surface of earth. Find the weight at a depth of \(\frac{R}{2}\) , where R is radius of earth
Find tension in string if all surfaces are smooth and string is massless.

Variation of magnetic field through a coil of area 4 m2 is shown in figure. What is the EMF induced in the coil (in mV)?

A small square loop of wire of side $l$ is placed inside a large square loop of wire $L ( L >>l)$ Both loops are coplanar and their centers coincide at point $O$ as shown in figure The mutual inductance of the system is :
E = E0 sin (\(\omega\)t – kx)
B = B0 sin (\(\omega\)t – kx), then ratio of energy density of electric field to magnetic field is : 
A uniform current carrying cylindrical wire carries current \(I\) having radius 'a'. Magnetic field with distance x varies with relation given:

An infinitely-long conductor has a current of 14A flowing as shown in the figure. Find the magnetic field at center C.

The resistance of a wire is $5 \Omega$. It's new resistance in ohm if stretched to 5 times of it's original length will be:
Find the current flowing in 3Ω resistor in the given circuit
If momentum $[ P ]$, area $[ A ]$ and time $[ T ]$ are taken as fundamental quantities, then the dimensional formula for coefficient of viscosity is :
Which of the following physical quantities have the same dimensions?
Wire A and B have their Young’s moduli in the ratio 1:3, area of cross section in the ratio of 1:2 and lengths in ratio of 3:4. If same force is applied on the two wires to elongate then ratio of elongation is equal to
When electric field is applied to the electrons in a conductor it starts
What is the center of gravity of a semi-circular disc of radius (R)?

frequency of irradiation

Based on given graph between stopping potential and frequency of irradiation, work function of metal is equal to

Capacitance of an isolated conducting sphere of radius $R_1$ becomes $n$ times when it is enclosed by a concentric conducting sphere of radius $R_2$ connected to earth The ratio of their radii $\left(\frac{ R _2}{ R _1}\right)$ is:
Three identical particle $A, B$ and$ C$ of mass $100 \,kg$ each are placed in a straight line with $AB = BC =13 \,m$ The gravitational force on a fourth particle $P$ of the same mass is $F$, when placed at a distance $13\, m$ from the particle B on the perpendicular bisector of the line $AC$ The value of $F$ will be approximately :
Sound travels in a mixture of two moles of helium and $n$ moles of hydrogen If rms speed of gas molecules in the mixture is $\sqrt{2}$ times the speed of sound, then the value of $n$ will be
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?
Find the energy stored in the capacitor in a given circuit. 
A certain amount of gas of volume $V$ at $27^{\circ} C$ temperature and pressure $2 \times 10^7 Nm ^{-2}$ expands isothermally until its volume gets doubled Later it expands adiabatically until its volume gets redoubled The final pressure of the gas will be (Use $\gamma=15$ )
For the given radioactive decay \(^{298}_{94}X → ^{294}_{92}X + ^{4}_{2}ɑ + Q\) - value, binding energy per nucleon of X, Y and ɑ are a, b and c. The Q - value is equal to
If half life of a radio-active nuclide A is equal to average life of another radio-active nuclide B. Find the ratio of decay constant of A to that of B.