Physics questions
20027 published questions with worked solutions.
- Arrange the following in the ascending order of wavelength ( ) : (A) Microwaves ( _1) (B) Ultraviolet rays ( _2) (C) Infrared...
- Assertion (A) : A electron in a certain region of uniform magnetic field is moving with constant velocity in a straight line...
- A solid sphere is rolling without slipping on a horizontal plane. The ratio of the linear kinetic energy of the centre of mass of...
- Assertion (A) : In an insulated container, a gas is adiabatically shrunk to half of its initial volume. The temperature of the...
- The position vector of a moving body at any instant of time is given as r = (5t^2 i -5t j )m. The magnitude and direction of...
- A solid sphere and a hollow sphere of the same mass and of same radius are rolled on an inclined plane. Let the time taken to...
- In photoelectric effect, the stopping potential (V_0) v/s frequency ( ) curve is plotted. (h is the Planck's constant and _0 is...
- The energy E and momentum p of a moving body of mass m are related by some equation. Given that c represents the speed of light,...
- A tightly wound long solenoid carries a current of 1.5 A. An electron is executing uniform circular motion inside the solenoid...
- The ratio of the power of a light source S_1 to that the light source S_2 is 2. S_1 is emitting 2 10^ 15 photons per second at...
- The increase in pressure required to decrease the volume of a water sample by 0.2% is P × 10^5Nm^ -2 . Bulk modulus of water is...
- Acceleration due to gravity on the surface of earth is 'g'. If the diameter of earth is reduced to one third of its original...
- In the experiment for measurement of viscosity ' ' of given liquid with a ball having radius R, consider following statements. A....
- Consider following statements: A. Surface tension arises due to extra energy of the molecules at the interior as compared to the...
- Three infinitely long wires with linear charge density are placed along the x-axis, y-axis and z-axis respectively. Which of the...
- A Carnot engine (E) is working between two temperatures 473K and 273K. In a new system two engines – engine E_1 works between...
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: A sound wave...
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: In a central...
- Choose the correct nuclear process from the below options [p: proton, n: neutron, e^-: electron, e^+: positron, : neutrino, :...
- A wire of resistance R is bent into an equilateral triangle and an identical wire is bent into a square. The ratio of resistance...