Physics questions
20027 published questions with worked solutions.
- A coil of inductance 2H having negligible resistance is connected to a source of supply whose voltage is given by V = 3t volt....
- A monoatomic gas of mass 4.0 u is kept in an insulated container. Container is moving with velocity 30 m/s. If container is...
- The potential energy (U) of a diatomic molecule is a function dependent on r (interatomic distance) as U= r^ 10 - r^2 -3 where, a...
- In a simple harmonic oscillation, what fraction of total mechanical energy is in the form of kinetic energy, when the particle is...
- A force F =(40 i +10 j ) N acts on a body of mass 5 kg. If the body starts from rest, its position vector r at time t = 10 s,...
- A prism of refractive index and angle of prism A is placed in the position of minimum angle of deviation. If minimum angle of...
- A heat engine has an efficiency of 1 6 . When the temperature of sink is reduced by 62°C, its efficiency get doubled. The...
- A 10 resistance is connected across 220V – 50Hz AC supply. The time taken by the current to change from its maximum to the rms...
- A balloon was moving upwards with a uniform velocity of 10 m/s. An object of finite mass is dropped from the balloon when it was...
- If q_f is the bound charge on the capacitor plates and q_b is the bound charge on the dielectric slab of dielectric constant k...
- Two spherical soap bubbles of radii r_1 and r_2 in vacuum combine under isothermal conditions. The resulting bubble has a radius...
- The force is given in terms of time t and displacement x by the equation F = A cos Bx + C sin Dt The dimensional formula of AD B...
- An electron moving with speed v and a photon moving with speed c, have same D-Broglie wavelength. The ratio of kinetic energy of...
- The instantaneous velocity of a particle moving in a straight line is given as v = t+ t^2, where and are constants. The distance...
- When radiation of wavelength is incident on a metallic surface, the stopping potential of ejected photoelectrons is 4.8 V. If the...
- A system consists of two types of gas molecules A and B having same number density 2 10^ 25 /m^3. The diameter of A and B are 10...
- A light beam of wavelength 500 nm is incident on a metal having work function of 1.25 eV, placed in a magnetic field of intensity...
- A message signal of frequency 20 kHz and peak voltage of 20 volt is used to modulate a carrier wave of frequency 1 MHz and peak...Not in JEE or NEET syllabus
- From the given data, the amount of energy required to break the nucleus of aluminium 27 13 Al is —— x 10^ -3 J. Mass of neutron =...
- A force of F = (5y + 20) j N acts on a particle. The workdone by this force when the particle is moved from y = 0 m to y = 10 m...