Physics questions
20027 published questions with worked solutions.
- A hydrogen atom in its ground state absorbs 10.2 eV of energy. The angular momentum of electron of the hydrogen atom will...
- In a carnot engine, the temperature of reservoir is 527°C and that of sink is 200 K. If the work done by the engine when it...
- In young's double slit experiment the two slits are 0.6 mm distance apart. Interference pattern is observed on a screen at a...
- The current density in a cylindrical wire of radius 4 mm is 4 10^ 6 Am^ -2 . The current through the outer portion of the wire...
- A capacitor of capacitance 50 pF is charged by 100 V source. It is then connected to another uncharged identical capacitor....
- The height of a transmitting antenna at the top of a tower is 25 m and that of receiving antenna is, 49 m. The maximum distance...Not in JEE or NEET syllabus
- A pendulum of length 2 m consists of a wooden bob of mass 50 g. A bullet of mass 75 g is fired towards the stationary bob with a...
- Consider the efficiency of carnot's engine is given by = ( / ) _ e ( x/kT), where and are constants. If T is temperature, k is...
- At time t = 0 a particle starts travelling from a height 7ẑ cm in a plane keeping z coordinate constant. At any instant of time...
- A pressure-pump has a horizontal tube of cross sectional area 10 cm^ 2 for the outflow of water at a speed of 20 m/s. The force...
- Assume there are two identical simple pendulum clocks. Clock – 1 is placed on the earth and Clock - 2 is placed on a space...
- A vessel contains 14 g of nitrogen gas at a temperature of 27°C. The amount of heat to be transferred to the gas to double the...
- A slab of dielectric constant K has the same cross-sectional area as the plates of a parallel plate capacitor and thickness 3d/4,...
- Given below are two statements: Statement I : A uniform wire of resistance 80 is cut into four equal parts. These parts are now...
- A transformer operating at primary voltage 8 kV and secondary voltage 160 V serves a load of 80 kW. Assuming the transformer to...
- The power of a lens (biconvex) is 1.25 m^ -1 in particular medium. Refractive index of the lens is 1.5 and radii of curvature are...
- A radioactive sample decays 7/8 times its original quantity in 15 minutes. The half life of the sample is
- A FM broad cast transmitter, using modulating signal of frequency 20 kHz has a deviation ratio of 10. The Banwidth required for...Not in JEE or NEET syllabus
- A ball is thrown vertically upwards with a velocity of 19.6 ms^ -1 from the top of a tower. The ball strikes the ground after 6...
- The distance of centre of mass from end A of a one dimensional rod (AB) having mass density = _ 0 (1 - x^ 2 /L^ 2 ) kg/m and...