Physics questions
20027 published questions with worked solutions.
- A particle executes simple harmonic motion represented by displacement function as x(t) = A sin( + ) If the position and velocity...
- A swimmer wants to cross a river from point A to point B. Line AB makes an angle of 30° with the flow of river. Magnitude of...
- The K_ X-ray of molybdenum has wavelength 0.071 nm. If the energy of a molybdenum atoms with a K electron knocked out is 27.5...
- The water is filled upto height of 12 m in a tank having vertical sidewalls. A hole is made in one of the walls at a depth 'h'...
- Which of the following is not a dimensionless quantity ?
- If E and H represents the intensity of electric field and magnetising field respectively, then the unit of E/H will be :
- An object is placed beyond the centre of curvature C of the given concave mirror. If the distance of the object is d_1 from C and...
- Moment of inertia of a square plate of side l about the axis passing through the centre and perpendicular to the plane of square...
- An ideal gas is expanding such that PT^3 = constant. The coefficient of volume expansion of he gas is :
- In a photoelectric experiment, increasing the intensity of incident light :
- A bar magnet is passing through a conducting loop of radius R with velocity v. The radius of the bar magnet is such that it just...
- Two ions of masses 4 amu and 16 amu have charges +2e and +3e respectively. These ions pass through the region of constant...
- In Millikan's oil drop experiment, what is viscous force acting on an uncharged drop of radius 2.0 10^ -5 m and density 1.2...
- Electric field in a plane electromagnetic wave is given by E=50 (500x-10 10^ 10 t)V/m The velocity of electromagnetic wave in...
- Five identical cells each of internal resistance 1 and emf 5V are connected in series and in parallel with an external resistance...
- The alternating current is given by i= 42 ( 2 T t )+10 A The r.m.s. value of this current is ........ A.
- First, a set of n equal resistors of 10 each are connected in series to a battery of emf 20V and internal resistance 10 . A...
- Two cars X and Y are approaching each other with velocities 36 km/h and 72 km/h respectively. The frequency of a whistle sound as...
- If the velocity of a body related to displacement x is given by v= 5000+24x m/s, then the acceleration of the body is ...m/s^2
- Two persons A and B perform same amount of work in moving a body through a certain distance d with application of forces acting...