Physics questions
20027 published questions with worked solutions.
- Young's double slit experiment is carried out by using green, red and blue light, one color at a time. The fringe widths recorded...
- Two large vertical and parallel metal plates having a separation of 1 cm are connected to a DC voltage source of potential...
- Consider the motion of a positive point charge in a region where there are simultaneous uniform electric and magnetic fields E =...
- A person blows into open-end of a long pipe. As a result, a high-pressure pulse of air travels down the pipe. When this pulse...
- A proton is fired from very far away towards a nucleus with charge Q = 120 e, where e is the electronic charge. It makes a...
- A thin uniform cylindrical shell, closed at both ends, is partially filled with water. It is floating vertically in water in...
- Two moles of ideal helium gas are in a rubber balloon at 30 °C. The balloon is fully expandable and can be assumed to require no...
- A student is performing the experiment of Resonance Column. The diameter of the column tube is 4 cm. The frequency of the tuning...
- Two solid cylinders P and Q of same mass and same radius start rolling down a fixed inclined plane from the same height at the...
- Two spherical planets P and Q have the same uniform density ρ, masses M_P and M_Q, and surface areas A and 4A, respectively. A...
- The diameter of a cylinder is measured using a Vernier callipers with no zero error. It is found that the zero of the Vernier...
- A ray of light travelling in the direction 1 2 ( i + 3 j ) is incident on a plane mirror. After reflection, it travels along the...
- In the Young's double slit experiment using a monochromatic light of wavelength λ, the path difference (in terms of an integer n)...
- A pulse of light of duration 100 ns is absorbed completely by a small object initially at rest. Power of the pulse is 30 mW and...
- A particle of mass m is projected from the ground with an initial speed u_0 at an angle α with the horizontal. At the highest...
- The work done on a particle of mass m by a force, K [ x (x^2 + y^2)^ 3/2 i + y (x^2 + y^2)^ 3/2 j ] (K being a constant of...
- One end of a horizontal thick copper wire of length 2L and radius 2R is welded to an end of another horizontal thin copper wire...
- The image of an object, formed by a plano-convex lens at a distance of 8 m behind the lens, is real and is one-third the size of...
- A horizontal stretched string, fixed at two ends, is vibrating in its fifth harmonic according to the equation, y(x, t) = (0.01 m...
- A solid sphere of radius R and density ρ is attached to one end of a mass-less spring of force constant k. The other end of the...