Physics questions
20027 published questions with worked solutions.
- The electric field intensity produced by the radiation coming from a 100 W bulb at a distance of 3m is E. The electric field...
- A body of mass 1 kg rests on a horizontal floor with which it has a coefficient of static friction 1 3 . It is desired to make...
- The electric field in a region is given by E = 2 5 E_0 i + 3 5 E_0 j with E_0=4.0 10^3 N C . The flux of this field through a...
- The image of an object placed in air formed by a convex refracting surface is at a distance of 10 m behind the surface. The image...
- Seawater at a frequency f = 9 10^2 Hz, has permittivity =80 _0 and resistivity = 0.25 . Imagine a parallel plate capacitor is...
- When two soap bubbles of radii a and b (b > a) coalesce, the radius of curvature of common surface is
- A polyatomic ideal gas has 24 vibrational modes. What is the value of ?
- If an electron is moving in the n^ th orbit of the hydrogen atom, then its velocity (v_n) for the n^ th orbit is given as :
- The vernier scale used for measurement has a positive zero error of 0.2 mm. If while taking a measurement it was noted that '0'...
- An AC current is given by I = I_1 t+I_2 t. A hot wire ammeter will give a reading :
- A car accelerates from rest at a constant rate for some time after which it decelerates at a constant rate to come to rest. If...
- A solenoid of 1000 turns per metre has a core with relative permeability 500. Insulated windings of the solenoid carry an...
- For what value of displacement the kinetic energy and potential energy of a simple harmonic oscillation become equal ?
- A carnot's engine working between 400 K and 800 K has a work output of 1200 J per cycle. The amount of heat energy supplied to...
- The thickness at the centre of a plano convex lens is 3 mm and the diameter is 6 cm. If the speed of light in the material of the...
- A boy is rolling a 0.5 kg ball on the frictionless floor with the speed of 20 ms ^ -1 . The ball gets deflected by an obstacle on...
- Two ideal polyatomic gases at temperatures T_1 and T_2 are mixed so that there is no loss of energy. If F_1 and F_2, m_1 and m_2,...
- A current of 10A exists in a wire of crosssectional area of 5 mm ^2 with a drift velocity of 2 10^ -3 ms ^ -1 . The number of...
- For VHF signal broadcasting, —— km ^2 of maximum service area will be covered by an antenna tower of height 30m if the receiving...Not in JEE or NEET syllabus
- The angular speed of truck wheel is increased from 900 rpm to 2460 rpm in 26 seconds. The number of revolutions by the truck...