List of top Physics Questions

A physical quantity P depends on electric field (E) and permittivity of free space ( ε0 ) as  P ∝ E ε02, Find dimension of P
A disk of mass M, radius R is rotating about an axis passing through its centre and perpendicular to its plane with angular speed ω. If another disk of mass \(\frac{M}{2}\) and radius R is gently placed over it what will be their common angular velocity after some time?
Figure shows two charges q1 and –q2 placed on the x-axis as shown. If electric field at p is along x-direction, find \(\frac{q_1}{q_2}\)
two charges q1 and –q2 placed on the x-axis
The ratio of molar heat capacity at constant volume of one mole monoatomic gas to the one mole diatomic gas is given as a/b, where a and b are co-prime number, then find (a + b)
In a diffraction pattern of a monochromatic light of wavelength 6000 pm, the slit width is 3 mm. If the angular position of 2nd minima is N x 10-6 rad, find N.
Three particles having different masses have the same momentum. Find the ratio of their kinetic energy. (m1 = 400 gm,m2 = 1.2 kg,m3 = 1.6 kg)
An electromagnetic radiation of intensity 360 W /cm2 is incident normally on a non-reflecting surface having area A. Average force on the surface is found to be 2.4 x 10-4 N. Find the value of A.
In a series LCR Circuit, the value of resistance as well as (XL - XC) is halved, then the new current amplitude (I2) will satisfy: (I1 is old current amplitude)
The acceleration of a moving body is found from the
If the amount of heat given to a system is $35\, J$ and the amount of work done on the system is $15\, J$, then the change in internal energy of the system is
Find the ratio of energy stored in the two given capacitor systems.
ratio of energy stored in the two given capacitor systems ratio of energy stored in the two given capacitor systems
A car of mass 800 kg is moving in a circular path of radius 300 m on a banked road with an angle 30°. Coefficient of friction between the car and road is 0.2. Find the maximum safe speed (to the nearest integer in m/s) with which the car can travel. (Take √3 = 1.7)
For a device, power consumed = 110 W and voltage supplied is 220 V. The number of electrons that flow in 1 is \(\frac{x}{4}\) × 1017 . Find x.
Find net kinetic energy (maximum possible) associated with 20 diatomic molecules (Here kB is Boltzmann constant and T is absolute temperature of diatomic gas).
An ammeter consisting of 240 Ω galvanometer and 10 Ω shunt resistance is connected in circuit as shown. Reading of ammeter is
An ammeter consisting of 240 Ω galvanometer
Find the longest wavelength of the Paschen series for hydrogen atom. (Rydberg constant = 107 /m)
The weight of an object measured on the surface of earth is 300 N. What will be the weight of the same object at depth R/4 inside the earth? (Given R = Radius of earth)
A tree branch holds a weight of 200 N by a uniform chain of mass 10 kg. The force applied by branch to hold this weight is ______ (Take g = 10 m/s2 )
There are two fixed charged spheres P and Q repelling each other with a force of 16 N. A third neutral sphere is placed between the charged spheres. The new force between the spheres is _________ (assuming all the spheres are insulating)
A metallic rod of length 4 m is rotating about perpendicular bisector of the rod with angular velocity of 2 rad/s in presence of transverse magnetic field of 0.5 T. Potential difference developed across ends of rod is
Two tangent galvanometers $A$ and $B$ have coils of radii $8 \,cm$ and $16\, cm$ respectively and resistance $ 8\,\Omega $ , each. They are connected in parallel with a cell of emf $4\, V$ and negligible internal resistance. The deflections produced in the tangent galvanometers $A$ and $B$ are $ 30{}^\circ $ and $ 60{}^\circ $ respectively. If $A$ has $2$ turns, then $B$ must have
In the Wheatstone's network given, $ P=10\,\Omega , Q=20\,\Omega ,\,R=15\,\Omega , S=30\,\Omega , $ the current passing through the battery (of negligible internal resistance) is
A uniform heavy rod of length L and area of cross section 'A' is hanging from a fixed support. It young's modulus of the material of the rod is Y, the increase the length of rod is ( p is density of the mateiral of the rod)
Instantaneous current in a circuit is \(i(t)=[6+\sqrt54sin(2\pi + \pi/3)]\) A RMS value of current is
A research satellite of mass 200 kg circles the earth in an orbit of average radius $\frac{3R}{2}$ where R is the radius of earth. Assuming the gravitatioaal pull on a mass of 1 kg on the earth's surface to be 10 N, the puII on the sateIlite will be