List of top Physics Questions

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:

In $\vec{E}$ and $\vec{K}$ represent electric field and propagation vectors of the EM waves in vacuum, then magnetic field vector is given by:$(\omega-$ angular frequency):

A circular loop of radius $r$ is carrying current $I A$ The ratio of magnetic field at the center of circular loop and at a distance $r$ from the center of the loop on its axis is:

A $100\, m$ long wire having cross-sectional area $625 \times 10^{-4} \, m ^2$ and Young's modulus is $10^{10} Nm ^{-2}$ is subjected to a load of $250 \, N$, then the elongation in the wire will be:

As shown in the figure, a network of resistors is connected to a battery of $24 V$ with an internal resistance of $3 \Omega$ The currents through the resistors $R_4$ and $R_5$ are $I_4$ and $I_5$ respectively The values of $I _4$ and $I _5$ are:$(24 V , 3 \Omega)$

As shown in the figure, a network of resistors is connected to a battery of 24V with an internal resistance of 3 Ω 3Ω

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 weight of a body at the surface of earth is $18\, N$ The weight of the body at an altitude of $3200 \,km$ above the earth's surface is (given, radius of earth $R _{ e }=6400 \,km$ ):

A conducting circular loop of radius $\frac{10}{\sqrt{\pi}} cm$ is placed perpendicular to a uniform magnetic field of $0.5 T$ The magnetic field is decreased to zero in $0.5 s$ at a steady rate The induced emf in the circular loop at $0.25 s$ is:

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:

If two charges $q _1$ and $q _2$ are separated with distance ' $d$ ' and placed in a medium of dielectric constant $K$ What will be the equivalent distance between charges in air for the same electrostatic force?

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.

A ray of light is incident from air on a glass plate having thickness $\sqrt{3} cm$ and refractive index $\sqrt{2}$ The angle of incidence of a ray is equal to the critical angle for glass-air interface The lateral displacement of the ray when it passes through the plate is ___$\times 10^{-2} cm$ (given $\sin 15^{\circ}=026$ )

An point sized object is placed 4 cm from the double convex lens of focal length 8 cm. The change in the position of image, when the object is moved 2 cm towards the lens, is?

An object is placed on the principal axis of convex lens of focal length $10 cm$ as shown A plane mirror is placed on the other side of lens at a distance of $20 cm$ The image produced by the plane mirror is $5 cm$ inside the mirror The distance of the object from the lens is ___$cm$

Let $\gamma_1$be the ratio of molar specific heat at constant pressure and molar specific heat at constant volume of a monoatomic gas and $\gamma_2$ be the similar ratio of diatomic gas. Considering the diatomic gas molecule as a rigid rotator, the ratio, $\frac{\gamma_1}{\gamma_2}$ is :

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 :

When a beam of white light is allowed to pass through convex lens parallel to principal axis, the different colours of light converge at different point on the principle axis after refraction. This is called :

The velocity-time graph of a body moving in a straight line is shown in the figure.

The ratio of displacement to distance travelled by the body in time 0 to 10s is:

A long solenoid is formed by winding 70 turns/cm. If 2.0 A current flows, then the magnetic field produced inside the solenoid is:

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$
Assertion A: Steel is used in the construction of buildings and bridges.
Reason R: Steel is more elastic and its elastic limit is high.
In the light of above statements, choose the most appropriate answer from the options given below:

The frequency ($ \nu $) of an oscillating liquid drop may depend upon the radius ($ r $) of the drop, density ($ \rho $) of the liquid, and the surface tension ($ s $) of the liquid as: \[ \nu = k r^a \rho^b s^c \]
The values of $ a $, $ b $, and $ c $ respectively are:

The electric field and magnetic field components of an electromagnetic wave going through vacuum are described by:
\[ E_x = E_0 \sin(kz - \omega t), \quad B_y = B_0 \sin(kz - \omega t). \]
Then the correct relation between $ E_0 $ and $ B_0 $ is given by:

Given below are two statements:

Assertion (A): A pendulum clock when taken to Mount Everest becomes fast.
Reason (R): The value of $ g $ (acceleration due to gravity) is less at Mount Everest than its value on the surface of Earth.

In the light of the above statements, choose the most appropriate answer from the options given below:

If the distance of the Earth from the Sun is $ 1.5 \times 10^6 \, \text{km} $, then the distance of an imaginary planet from the Sun, if its period of revolution is $ 2.83 \, \text{years} $, is:

In an LC oscillator, if values of inductance and capacitance become twice and eight times, respectively, then the resonant frequency of oscillator becomes $x$ times its initial resonant frequency $\omega_0$ The value of $x$ is: