Physics questions
20027 published questions with worked solutions.
- A particle of mass M and positive charge Q, moving with a constant velocity u_1 = 4 i ms^ -1 , enters a region of uniform static...
- The work functions of Silver and Sodium are 4.6 and 2.3 eV, respectively. The ratio of the slope of the stopping potential versus...
- A freshly prepared sample of a radioisotope of half-life 1386 s has activity 10^3 disintegrations per second. Given that ln 2 =...
- A particle of mass 0.2 kg is moving in one dimension under a force that delivers a constant power 0.5 W to the particle. If the...
- A uniform circular disc of mass 50 kg and radius 0.4 m is rotating with an angular velocity of 10 rad s⁻¹ about its own axis,...
- A bob of mass m, suspended by a string of length l_1, is given a minimum velocity required to complete a full circle in the...
- Using the expression 2d sin θ = λ, one calculates the values of d by measuring the corresponding angles θ in the range 0 to 90°....
- Two bodies, each of mass M, are kept fixed with a separation 2L. A particle of mass m is projected from the midpoint of the line...
- A particle of mass m is attached to one end of a mass-less spring of force constant k, lying on a frictionless horizontal plane....
- A steady current I flows along an infinitely long hollow cylindrical conductor of radius R. This cylinder is placed coaxially...
- Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other. Wind blows along the...
- Match List I with List II and select the correct answer using the codes given below the lists : List I P. Boltzmann constant Q....
- Match List I of the nuclear processes with List II containing parent nucleus and one of the end products of each process and then...
- A light source, which emits two wavelengths _1 = 400 nm and _2 = 600 nm, is used in a Young's double slit experiment. If recorded...
- One end of a taut string of length 3 m along the x axis is fixed at x = 0. The speed of the waves in the string is 100 m s⁻¹. The...
- Let E_1(r), E_2(r) and E_3(r) be the respective electric fields at a distance r from a point charge Q, an infinitely long wire...
- A student is performing an experiment using a resonance column and a tuning fork of frequency 244 s⁻¹. He is told that the air in...
- Heater of an electric kettle is made of a wire of length L and diameter d. It takes 4 minutes to raise the temperature of 0.5 kg...
- During Searle's experiment, zero of the Vernier scale lies between 3.20 10^ -2 m and 3.25 10^ -2 m of the main scale. The 20th...
- Two parallel wires in the plane of the paper are distance X_0 apart. A point charge is moving with speed u between the wires in...