List of top Physics Questions asked in JEE Main

Choose the correct answer from the options given below:

LIST I		LIST II
A	Planck's constant (h)	1	$\left[ M ^1 L ^2 T ^{-2}\right]$
B	Stopping potential (Vs)	2	$\left[ M ^1 L ^1 T ^{-1}\right]$
C	Work function (ø)	3	$\left[ M ^1 L ^2 T ^{-1}\right]$
D	Momentum (p)	4	$\left[ M ^1 L ^2 T ^{-3} A ^{-1}\right]$

The electric potential at the center of two concentric half rings of radii $R_1$ and $R_2$, having same linear charge density $\lambda$ is :

A modulating signal is a square wave, as shown in the figure If the carrier wave is given as $c ( t )=2 \sin (8 \pi t)$ volts, the modulation index is:

A modulating signal is a square wave, as shown in the figure. If the carrier wave is given as c ( t )=2 sin (8 p t) volts, the modulation index is:

Given below are two statements :
Statement I : The temperature of a gas is $-73^{\circ} C$ When the gas is heated to $527^{\circ} C$, the root mean square speed of the molecules is doubled.
Statement II : The product of pressure and volume of an ideal gas will be equal to translational kinetic energy of the molecules.
In the light of the above statements, choose the correct answer from the options given below:

The maximum vertical height to which a man can throw a ball is $136 \,m$ The maximum horizontal distance upto which he can throw the same ball is:

$1 \,g$ of a liquid is converted to vapour at $3 \times 10^5 Pa$ pressure If $10 \%$ of the heat supplied is used for increasing the volume by $1600 \, cm ^3$ during this phase change, then the increase in internal energy in the process will be:

The Young's modulus of a steel wire of length $6 m$ and cross-sectional area $3 \,mm ^2$, is $2 \times 10^{11}$ $N / m ^2$. The wire is suspended from its support on a given planet A block of mass $4 kg$ is attached to the free end of the wire. The acceleration due to gravity on the planet is $\frac{1}{4}$ of its value on the earth The elongation of wire is (Take $g$ on the earth $=10\, m / s ^2$) :

For a body projected at an angle with the horizontal from the ground, choose the correct statement.

For three low density gases $A , B , C$ pressure versus temperature graphs are plotted while keeping them at constant volume, as shown in the figure.

The temperature corresponding to the point ' $K$ ' is :

When a parallel beam of white light incident on convex lens split into different colours the phenomenon is called.

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:
S-1 $\rightarrow$ Steel is used in construction of a bridge and house.
S–2 $\rightarrow$ Modulus of elasticity of steel is high.
In the light of the above statements, choose the correct answer from the options given below

In an amplitude modulation, a modulating signal having amplitude of $X V$ is superimposed with a carrier signal of amplitude $Y V$ in first case. Then, in second case, the same modulating signal is superimposed with different carrier signal of amplitude $2 YV$. The ratio of modulation index in the two cases respectively will be :

Given below are two statements : One is labelled as Assertion $A$ and the other is labelled as Reason R
Assertion A : Two metallic spheres are charged to the same potential One of them is hollow and another is solid, and both have the same radii Solid sphere will have lower charge than the hollow one.
Reason R : Capacitance of metallic spheres depend on the radii of spheres.
In the light of the above statements, choose the correct answer from the options given below.

If frequency can be represented as f = (radius)a (density)b (surface tension)c. Find a, b, c?

Ratio of molar heat capacity at constant pressure and at constant volume for monoatomic and diatomic gas is?

Statement-I : If we move upward and downward from the surface of earth surface acceleration due to gravity decreases in both upward and downward direction.
Statement-II : Acceleration due to gravity changes by same amount when we go up to height h and depth d when h = d.
Choose the correct options based on above statements.

Two simple harmonic waves having equal amplitudes of 8 cm and equal frequency of 10 Hz are moving along the same direction. The resultant amplitude is also 8 cm. The phase difference between the individual waves is _____ degree.

The moment of inertia of a semicircular ring about an axis, passing through the center and perpendicular to the plane of the ring, is $(\frac{1}{x})MR^2$, where R is the radius and M is the mass of the semicircular ring. The value of x will be:

A block is fastened to a horizontal spring. The block is pulled to a distance $x=10\ cm$ from its equilibrium position (at $x=0$ ) on a frictionless surface from rest. The energy of the block at $x=5$ $cm$ is $025 J$. The spring constant of the spring is _____$Nm ^{-1}$.

Find moment of inertia about axis shown which is equidistant from both spheres

Electric field in a certain region is given by $\overrightarrow{ E }=\left(\frac{ A }{x^2} \hat{i}+\frac{ B }{y^3} \hat{j}\right)$ The $SI$ unit of $A$ and $B$ are :

If the earth suddenly shrinks to $\frac{1}{ 64}$ th of its original volume with its mass remaining the same, the period of rotation of earth becomes $\frac{24}{ x}$ h. The value of x is .

Find the equivalent capacitance across points A and B in the given electric circuit.

A particle of mass m moving with a velocity v collides with a particle of mass 2m at rest and sticks to it. Velocity of the combined mass equal to?

The range of the projectile projected at an angle of 15° with hor izontal is 50 m. If the projectile is projected with same velocity at an angle of 45° with horizontal, then its range will be