Physics questions
20027 published questions with worked solutions.
- Under an adiabatic process, the volume of an ideal gas gets doubled. Consequently the mean collision time between the gas...
- A 60 pF capacitor is fully charged by a 20 V supply. It is then disconnected from the supply and is connected to another...
- The sum of two forces P and Q is R such that | R |=| P |. The angle (in degrees) that the resultant of 2 P and Q will make with Q...
- M grams of steam at 100° C is mixed with 200 g of ice at its melting point in a thermally insulated container. If it produces...
- For the four sets of three measured physical quantities as given below. Which of the following options is correct ? (i) A_1 =...
- A spring mass system (mass m, spring constant k and natural length ) rests in equilibrium on a horizontal disc. The free end of...
- A particle starts from the origin at t = 0 with an initial velocity of 3.0 i m/s and moves in the x-y plane with a constant...
- Two gases-argon (atomic radius 0.07 nm, atomic weight 40) and xenon (atomic radius 0.1 nm, atomic weight 140) have the same...
- An electron of mass m and magnitude of charge |e| initially at rest gets accelerated by a constant electric field E. The rate of...
- A wire of length L and mass per unit length 6.0 10^ -3 kg m ^ -1 is put under tension of 540 N. Two consecutive frequencies that...
- The energy required to ionize a hydrogen like ion in its ground state is 9 Rydbergs. What is the wavelength of the radiation...
- A plane electromagnetic wave is propagating along the direction i + j 2 , with its polarization along the direction k . The...
- A small circular loop of conducting wire has radius a and carries current I. It is placed in a uniform magnetic field B...
- A particle of mass m is projected with a speed u from the ground at an angle = 3 w.r.t. horizontal (x-axis). When it has reached...
- A small spherical droplet of density d is floating exactly half immersed in a liquid of density and surface tension T. The radius...
- There is a small source of light at some depth below the surface of water (refractive index = 4 3 ) in a tank of large cross...
- Planet A has mass M and radius R. Planet B has half the mass and half the radius of planet A. if the escape velocities from the...
- A rod of length L has non-uniform linear mass density given by (x)=a+b ( x L )^2, where a and b are constants and 0 x L. The...
- In a Young's double slit experiment 15 fringes are observed on a small portion of the screen when light of wavelength 500 nm is...
- Starting at temperature 300 K, one mole of an ideal diatomic gas ( = 1.4) is first compressed adiabatically from volume V_1 to...