Physics questions
20027 published questions with worked solutions.
- Two 10 cm long, straight wires, each carrying a current of 5 A are kept parallel to each other. If each wire experienced a force...
- A travelling microscope is used to determine the refractive index of a glass slab. If 40 divisions are there in 1 cm on main...
- The stopping potential for photoelectrons emitted from a surface illuminated by light of wavelength 6630 Å is 0.42 V. If the...
- An expression for a dimensionless quantity P is given by P = _e ( kt x ); where and are constants, x is distance; k is Boltzmann...
- A person is standing in an elevator. In which situation, he experiences weight loss?
- An object is thrown vertically upwards. At its maximum height, which of the following quantity becomes zero ?
- A thin circular ring of mass M and radius R is rotating with a constant angular velocity 2 rad s^ -1 in a horizontal plane about...
- The efficiency of a Carnot's engine, working between steam point and ice point, will be
- Time period of a simple pendulum in a stationary lift is 'T'. If the lift accelerates with g/6 vertically upwards then the time...
- Given below two statements: One is labelled as Assertion (A) and other is labelled as Reason (R). Assertion [A]: Non-polar...
- The magnetic flux through a coil perpendicular to its plane is varying according to the relation = (5t^ 3 + 4t^ 2 + 2t - 5)...
- An aluminium wire is stretched to make its length, 0.4% larger. The percentage change in resistance is :
- A proton and an alpha particle of the same velocity enter in a uniform magnetic field which is acting perpendicular to their...
- If electric field intensity of a uniform plane electro magnetic wave is given as E = −301.6 (kz - t) a _ x + 452.4 (kz - t) a _ y...
- In free space, an electromagnetic wave of 3 GHz frequency strikes over the edge of an object of size /100, where is the...
- An electron with speed and a photon with speed c have the same de-Broglie wavelength. If the kinetic energy and momentum of...
- How many alpha and beta particles are emitted when Uranium _ 92 U^ 238 decays to lead _ 82 Pb^ 206 ?
- Choose the correct statement for amplitude modulation :Not in JEE or NEET syllabus
- A fighter jet is flying horizontally at a certain altitude with a speed of 200 ms^ -1 . When it passes directly overhead an...
- A ball of mass 0.5 kg is dropped from the height of 10 m. The height, at which the magnitude of velocity becomes equal to the...