Physics questions
20027 published questions with worked solutions.
- A freshly prepared radioactive source of half life 2 hours 30 minutes emits radiation which is 64 times the permissible safe...
- In a Young's double slit experiment, a laser light of 560 nm produces an interference pattern with consecutive bright fringes'...
- The frequencies at which the current amplitude in an LCR series circuit becomes 1/ 2 times its maximum value, are 212 rad s^ -1...
- Two electric dipoles of dipole moments 1.2 10^ -30 C-m and 2.4 10^ -30 C-m are placed in two different uniform electric fields of...
- The frequency of echo will be _____ Hz if the train blowing a whistle of frequency 320 Hz is moving with a velocity of 36 km/h...
- The diameter of an air bubble which was initially 2 mm, rises steadily through a solution of density 1750 kg m^ -3 at the rate of...
- Velocity (v) and acceleration (a) in two systems of units 1 and 2 are related as v_ 2 = (n/m^ 2 )v_ 1 and a_ 2 = a_ 1 /(mn)...
- A ball is spun with angular acceleration = 6t^ 2 - 2t, where t is in second and is in rads^ -2 . At t = 0, the ball has angular...
- A block of mass 2 kg moving on a horizontal surface with speed of 4 ms^ -1 enters a rough surface ranging from x = 0.5 m to x =...
- Water falls from a 40 m high dam at the rate of 9 10^ 4 kg per hour. Fifty percentage of gravitational potential energy can be...
- A water drop of radius 1 m falls in a situation where the effect of buoyant force is negligible. Co-efficient of viscosity of air...
- What will be the effect on the root mean square velocity of oxygen molecules if the temperature is doubled and oxygen molecule...
- Two point charges A and B of magnitude +8 10^ -6 C and −8 10^ -6 C respectively are placed at a distance d apart. The electric...
- The space inside a straight current carrying solenoid is filled with a magnetic material having magnetic susceptibility equal to...Not in JEE Advanced syllabus
- Two parallel, long wires are kept 0.20 m apart in vacuum, each carrying current of x A in the same direction. If the force of...
- A coil is placed in time varying magnetic field. If the number of turns in the coil were to be halved and the radius of wire...
- An EM wave propagating in x-direction has a wavelength of 8 mm. The electric field vibrating y-direction has maximum magnitude of...
- In Young's double slit experiment performed using a monochromatic light of wavelength , when a glass plate ( = 1.5) of thickness...
- Let K_ 1 and K_ 2 be the maximum kinetic energies of photo-electrons emitted when two monochromatic beams of wavelength _ 1 and _...
- Following statements related to radioactivity are given below: (a) Radioactivity is a random and spontaneous process and is...