Physics questions
20027 published questions with worked solutions.
- Match the thermodynamic processes taking place in a system with the correct conditions. In the table : Q is the heat supplied, W...
- The driver of a bus approaching a big wall notices that the frequency of his bus's horn changes from 420 Hz to 490 Hz when he...
- A capacitor C is fully charged with voltage V_0. After disconnecting the voltage source, it is connected in parallel with another...
- The electric field of a plane electromagnetic wave is given by E =E_0( x + y ) (kz- t). Its magnetic filed will be given by :
- A cube of metal is subjected to a hydrostatic pressure of 4 GPa. The percentage change in the length of the side of the cube is...
- The change in the magnitude of the volume of an ideal gas when a small additional pressure P is applied at constant temperature,...
- Orange light of wavelength 6000 10^ -10 m illuminates a single slit of width 0.6 10^ -4 m. The maximum possible number of...
- The distance between an object and a screen is 100 cm. A lens can produce real image of the object on the screen for two...
- In a resonance tube experiment when the tube is filled with water up to height of 17.0 cm from bottom, it resonates with a given...
- A helicopter reises from rest on the ground vertically upwards with a constant acceleration g. A food packet is dropped from the...
- A hollow spherical shell at outer radius R floats just submerged under the water surface. The inner radius of the shell is r. If...
- An electrical power line, having a total resistance of 2 , delivers 1 kW at 220 V. The efficiency of the transmission line is...
- Assume that the displacement(s) of air is proportional to the pressure difference ( p) created by a sound wave. Displacement(s)...
- A bullet of mass 5g, travelling with a speed of 210 m/s, strikes a fixed wooden target. One half of its kinetic energy is...
- Number of molecules in a volume of 4 cm ^3 of a perfect monoatomic gas at some temperature T and at a pressure of 2 cm of mercury...
- A square loop of side 2a, and carrying current I, is kept in XZ plane with its centre at origin. A long wire carrying the same...
- A physical quantity z depends on four observables a, b, c and d, as z= a^2b^ 2/3 c d^3 . The percentage of error in the...
- A galvanometer of resistance G is converted into a voltmeter of range 0 – 1V by connecting a resistance R_1 in series with it....
- A wheel is rotaing freely with an angular speed on a shaft. The moment of inertia of the wheel is I and the moment of inertia of...
- The value of the acceleration due to gravity is g_1 at a height h= R 2 (R = radius of the earth) from the surface of the earth....