Physics questions
20027 published questions with worked solutions.
- A particle of mass m is fixed to one end of a light spring having force constant k and unstretched length . The other end is...
- The dimension of stopping potential V_0 in photoelectric effect in units of Planck's constant 'h', speed of light 'c' and...
- The magnifying power of a telescope with tube length 60 cm is 5. What is the focal length of its eye piece ?
- When photon of energy 4.0 eV strikes the surface of a metal A, the ejected photoelectrons have maximum kinetic energy T_A eV and...
- Proton with kinetic energy of 1 MeV moves from south to north. It gets an acceleration of 10^ 12 m/ s ^2 by an applied magnetic...
- Effective capacitance of parallel combination of two capacitors C_1 and C_2 is 10 . When these capacitors are individually...
- The critical angle of a medium for a specific wavelength, if the medium has relative permittivity 3 and relative permeability 4 3...
- In finding the electric field using Gauss law the formula | E |= q_ enc _0|A| is applicable. In the formula _0 is permittivity of...
- A leak proof cylinder of length 1m, made of a metal which has very low coefficient of expansion is floating vertically in water...
- Consider a solid sphere of radius R and mass density (r)= _0 (1- r^2 R^2 ), 0<r R. The minimum density of a liquid in which it...
- Four resistances of 15 , 12 , 4 and 10 respectively in cyclic order to form Wheatstone's network. The resistance that is to be...
- A point object in air is in front of the curved surface of a plano-convex lens. The radius of curvature of the curved surface is...
- A one metre long (both ends open) organ pipe is kept in a gas that has double the density of air at STP. Assuming the speed of...
- A particle is moving along the x-axis with its coordinate with time 't' given by x(t)=10+8t-3t^2. Another particle is moving...
- A body A, of mass m = 0.1 kg has an initial velocity of 3 i ms ^ -1 . It collides elastically with another body, B of the same...
- A Carnot engine having an efficiency of 1 10 is being used as a refrigerator. If the work done on the refrigerator is 10 J, the...
- A uniform sphere of mass 500 g rolls without slipping on a plane horizontal surface with its centre moving at a speed of 5.00...
- Consider two charged metallic spheres S_1 and S_2 of radii R_1 and R_2, respectively. The electric fields E_1 (on S_1) and E_2...
- Consider a mixture of a n moles of helium gas and 2n moles of oxygen gas (molecules taken to be rigid) as an ideal gas. Its C_P...
- A particle moves such that its position vector r (t)= t , i + t , j where is a constant and t is time. Then which of the...