Physics questions
20027 published questions with worked solutions.
- The time period of a satellite of earth is 5 hours. If the separation between the earth and the satellite is increased to 4 times...
- Two spherical bodies of mass M and 5M & radii R & 2R respectively are released in free space with initial separation between...
- The escape velocity for a body projected vertically upwards from the surface of earth is 11 km/s. If the body is projected at an...
- A wire suspended vertically from one of its ends is stretched by attaching a weight of 200 N to the lower end. The weight...
- The earth radiates in the infra-red region of the spectrum. The spectrum is correctly given by
- According to Newton's law of cooling, the rate of cooling of a body is proportional to ( )^n, where is the difference of the...
- "Heat cannot by itself flow from a body at lower temperature to a body at higher temperature" is a statement or consequence of
- A Carnot engine takes 3 10^6cal. of heat from a reservoir at 627^ , and gives it to a sink at 27^ . The work done by the engine is
- During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its absolute temperature. The ratio...
- A mass M is suspended from a spring of negligible mass. The spring is pulled a little and then released so that the mass executes...
- The displacement of a particle varies according to the relation x = 4( t + t). The amplitude of the particle is
- A body executes simple harmonic motion. The potential energy (P.E), the kinetic energy (K.E) and total energy (T.E) are measured...
- The displacement y of a wave travelling in the x-direction is given by y = 10^ -4 (600t - 2x + 3 ) metres where x is expressed in...
- If the electric flux entering and leaving an enclosed surface respectively is _1 and _2, the electric charge inside the surface...
- A thin spherical conducting shell of radius R has a charge q. Another charge Q is placed at the centre of the shell. The...
- A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the...
- The work done in placing a charge of 8 10^ -18 coulomb on a condenser of capacity 100 micro-farad is
- The length of a wire of a potentiometer is 100 cm, and the e.m.f. of its standard cell is E volt. It is employed to measure the...
- A strip of copper and another of germanium are cooled from room temperature to 80 K. The resistance ofNot in JEE Advanced syllabus
- An ammeter reads upto 1 ampere. Its internal resistance is 0.81ohm. To increase the range to 10 A the value of the required shunt...