Physics questions
20027 published questions with worked solutions.
- A radioactive sample has an average life of 30 m and is decaying. A capacitance 200 is first charged and later connected with...
- A particle of mass 9.1 10^ -31 kg travels in a medium with a speed of 10^6m/s and a photon of a radiation of linear momentum 10^...
- A stone of mass 20 g is projected from a rubber catapult of length 0.1 m and area of cross section 10^ -6 m^2 stretched by an...
- The amplitude of upper and lower side bands of A.M. wave where a carrier signal with frequency 11.21 MHz, peak voltage 15 V is...Not in JEE or NEET syllabus
- In a uniform magnetic field, the magnetic needle has a magnetic moment 9.85 10^ -2 A/m^2 and moment of inertia 5 10^ -6 kg m^2....Not in JEE Advanced syllabus
- An electron and proton are separated by a large distance. The electron starts approaching the proton with energy 3 eV. The proton...
- The expected graphical representation of the variation of angle of deviation ' ' with angle of incidence 'i' in a prism is :
- A raindrop with radius R = 0.2 mm falls from a cloud at a height h = 2000 m above the ground. Assume that the drop is spherical...
- One mole of an ideal gas is taken through an adiabatic process where the temperature rises from 27°C to 37°C. If the ideal gas is...
- An object of mass 0.5 kg is executing simple harmonic motion. Its amplitude is 5 cm and time period (T) is 0.2 s. What will be...
- Match List I with List II. List-I: (a) Capacitance, C (b) Permittivity of free space, _0 (c) Permeability of free space, _0 (d)...
- A 100 resistance, a 0.1 capacitor and an inductor are connected in series across a 250 V supply at variable frequency. Calculate...
- Two Carnot engines A and B operate in series such that engine A absorbs heat at T_1 and rejects heat to a sink at temperature T....
- Two identical particles of mass 1 kg each go round a circle of radius R, under the action of their mutual gravitational...
- A physical quantity 'y' is represented by the formula y=m^2r^ -4 g^xl^ -3/2 . If the percentage errors found in y, m, r, l and g...
- An automobile of mass 'm' accelerates starting from origin and initially at rest, while the engine supplies constant power P. The...
- The planet Mars has two moons, if one of them has a period 7 hours, 30 minutes and an orbital radius of 9.0 10^3km. Find the mass...
- A particle of mass M originally at rest is subjected to a force whose direction is constant but magnitude varies with time...
- The difference in the number of waves when yellow light propagates through air and vacuum columns of the same thickness is one....
- The maximum amplitude for an amplitude modulated wave is found to be 12V while the minimum amplitude is found to be 3V. The...Not in JEE or NEET syllabus