Physics questions
20027 published questions with worked solutions.
- A body of mass 'm' dropped from a height 'h' reaches the ground with a speed of 0.8 gh . The value of workdone by the...
- The ranges and heights for two projectiles projected with the same initial velocity at angles 42° and 48° with the horizontal are...
- Due to cold weather a 1 m water pipe of cross–sectional area 1 cm^2 is filled with ice at –10°C. Resistive heating is used to...
- Two resistors R_1=(4 0.8) and R_2=(4 0.4) are connected in parallel. The equivalent resistance of their parallel combination will...
- The half life period of radioactive element x is same as the mean life time of another radioactive element y. Initially they have...
- A capacitor is connected to a 20 V battery through a resistance of 10 . It is found that the potential difference across the...
- Electric field of plane electromagnetic wave propagating through a non-magnetic medium is given by E=20 (2 10^ 10 t-200x)V/m. The...
- The temperature of 3.00 mol of an ideal diatomic gas is increased by 40.0 °C without changing the pressure of the gas. The...
- The width of one of the two slits in a Young's double slit experiment is three times the other slit. If the amplitude of the...
- Two satellites revolve around a planet in coplanar circular orbits in anticlockwise direction. Their period of revolutions are 1...
- When a body slides down from rest along a smooth inclined plane making an angle of 30° with the horizontal, it takes time T. When...
- The average translational kinetic energy of N_2 gas molecules at ...........°C becomes equal to the K.E. of an electron...
- A uniform heating wire of resistance 36 is connected across a potential difference of 240 V. The wire is then cut into half and...
- A steel rod with y = 2.0 10^ 11 Nm^ -2 and =10^ -5 °C^ -1 of length 4 m and area of cross-section 10 cm^2 is heated from 0°C to...
- A 2 kg steel rod of length 0.6 m is clamped on a table vertically at its lower end. It is free to rotate in vertical plane. The...
- A carrier wave with amplitude of 250 V is amplitude modulated by a sinusoidal base band signal of amplitude 150 V. The ratio of...Not in JEE or NEET syllabus
- An engine is attached to a wagon through a shock absorber of length 1.5 m. The system with a total mass of 40,000 kg is moving...
- A charge Q is moving d l distance in the magnetic field B . Find the value of work done by B .
- A mosquito is moving with a velocity v =0.5t^2 i +3t j +9 k m/s and accelerating in uniform conditions. What will be the...
- Find out the surface charge density at the intersection of point x = 3 m plane and x-axis, in the region of uniform line charge...