Physics questions
20027 published questions with worked solutions.
- The deflection in moving coil galvanometer falls from 25 divisions to 5 division when a shunt of 24 Ω is applied. The resistance...
- Match List-I with List-II List-I: (a) B d = _0 i_c + _0 _0 d _E dt (b) E d = d _B dt (c) E d A = Q _0 (d) B d A = 0 List-II: (i)...
- At what distance above and below the surface of the earth a body will have same weight. (take radius of earth as R.)
- A biconvex lens of refractive index 1.5 has a focal length of 20 cm in air. Its focal length when immersed in a liquid of...
- Two vessels A and B are of the same size and are at same temperature. A contains 1 g of hydrogen and B contains 1 g of oxygen....
- The explosive in a hydrogen bomb is a mixture of ₁H², ₁H³ and ₃Li⁶ in some condensed form. The chain reaction is given by ₃Li⁶ +...
- A block of mass 100 kg slides over a distance of 10 m on a horizontal surface. If the co-efficient of friction between the...
- The de-Broglie wavelength of an electron is the same as that of a photon. If velocity of electron is 25% of the velocity of...
- The resistance R = V/I where V = (200 ± 5) V and I = (20 ± 0.2) A, the percentage error in the measurement of R is-
- Two charges of 5Q and –2Q are situated at the points (3a, 0) and (–5a, 0) respectively. The electric flux through a sphere of...
- Given below are two statements: Statement I: If a capillary tube is immersed first in cold water and then in hot water, the...
- A convex mirror of radius of curvature 30 cm forms an image that is half the size of the object. The object distance is-
- A capacitor of capacitance 100 μF is charged to a potential of 12 V and connected to a 6.4 mH inductor to produce oscillations....
- The potential energy function (in J) of a particle in a region of space is given as U = (2x² + 3y² + 2z). Here x, y and z are in...
- The electric current through a wire varies with time as I = I₀ + βt, where I₀ = 20 A and β = 3 A/s. The amount of electric charge...
- A cylinder is rolling down on an inclined plane of inclination 60°. It's acceleration during rolling down will be x 3 m/s², where...
- A ball rolls off the top of a stairway with horizontal velocity u. The steps are 0.1 m high and 0.1 m wide. The minimum velocity...
- When the displacement of a simple harmonic oscillator is one third of its amplitude, the ratio of total energy to the kinetic...
- A 16 Ω wire is bend to form a square loop. A 9 V battery with internal resistance 1 Ω is connected across one of its sides. If a...
- When a hydrogen atom going from n = 2 to n = 1 emits a photon, its recoil speed is x5 m/s. Where x = ________. (Use mass of...