Physics questions
20027 published questions with worked solutions.
- A passenger sitting in a train A moving at 90 km/h observes another train B moving in the opposite direction for 8 s. If the...
- A vehicle of mass 200 kg is moving along a leveled curved road of radius 70 m with angular velocity of 0.2 rad/s. The centripetal...
- Given below are two statements: Statement I : An AC circuit undergoes electrical resonance if it contains either a capacitor or...
- A particle executes SHM of amplitude A. The distance from the mean position when it's kinetic energy becomes equal to its...
- In the equation [X+ a Y^2 ][Y-b]=RT, X is pressure, Y is volume, R is universal gas constant T is temperature. The physical...
- Given below are two statements: one is labelled as Assertion A and the other labelled as Reason R Assertion A : A spherical body...
- In an electromagnetic wave, at an instant and at a particular position, the electric field is along the negative z-axis and...
- An electron is moving along the positive x-axis. If uniform magnetic field is applied parallel to the negative z-axis, then A....
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : The binding...
- Given below are two statements: Statement I : For a planet, if the ratio of mass of the planet to its radius increase, the escape...
- Two plates A and B have thermal conductivities 84 Wm^ -1 K^ -1 and 126 Wm^ -1 K^ -1 respectively. They have same surface area and...
- An atom absorbs a photon of wavelength 500 nm and emits another photon of wavelength 600 nm. The net energy absorbed by the atom...
- A bi convex lens of focal length 10 cm is cut in two identical parts along a plane perpendicular to the principal axis. The power...
- In an experiment with sonometer when a mass of 180 g is attached to the string, it vibrates with fundamental frequency of 30 Hz....
- A light rope is wound around a hollow cylinder of mass 5 kg and radius 70 cm. The rope is pulled with a force of 52.5 N. The...
- A car accelerates from rest at u m/s. The energy spent in this process is E J. The energy required to accelerate the car from u...
- An insulated copper wire of 100 turns is wrapped around a wooden cylindrical core of the crosssectional area 24 cm^2. The two...
- A planet having mass 9 M_e and radius 4R_e, where M_e and R_e are mass and radius of earth respectively, has escape velocity in...
- ^ 238 _ 92 A ^ 234 _ 90 B+^4_2D+Q In the given nuclear reaction, the approximate amount of energy released will be : [Given, mass...
- The difference between threshold wavelengths for two metal surfaces A and B having work function _A = 9 eV and _B = 4.5 eV in nm...