Physics questions
20027 published questions with worked solutions.
- The density ρ of a uniform cylinder is determined by measuring its mass m, length l and diameter d. The measured values of m, l...
- The rain drop of mass 1 g, starts with zero velocity from a height of 1 km. It hits the ground with a speed of 5 m/s. The work...
- A solid sphere of radius 4 cm and mass 5 kg is rotating (rotation axis is passing through the centre of the sphere) with an...
- The two wires A and B of equal cross-section but of different materials are joined together. The ratio of Young's modulus of wire...
- Two closed vessels of same volume are joined through a narrow tube and both vessels are filled with air of pressure 90 kPa and...
- In interference experiment the path difference between two interfering waves at a point A on the screen is λ/3, where λ is the...
- A particle is executing simple harmonic motion. Its amplitude is A and time period is 5 sec. The time required by it to move from...
- A thin half ring of radius 35 cm is uniformly charged with a total charge of Q coulomb. If the magnitude of the electric field at...
- A point light source emits E.M. waves in free space. A detector, placed at a distance of L m, measures the intensity as I₀. The...
- The ratio of momentum of the photons of the 1st and 2nd line of Balmer series of Hydrogen atoms is α/β. The possible values of α...
- A LCR series circuit driven with E_rms=90 V at frequency f_d=30 Hz has resistance R=80 Ω, an inductance with inductive reactance...
- An unpolarized light of intensity I₀ passes through polarizer and then through a certain optically active solution and finally it...
- The energy released when (7/17.13) kg of ⁷₃Li is converted into ⁴₂He by proton bombardment is α×10³² eV. The value of α is...
- A three coulomb charge moves from the point (0,−2,−5) to the point (5,1,2) in an electric field expressed as E=2x i+3y^2 j+4 k...
- A certain gas is isothermally compressed to (1/3)ʳᵈ of its initial volume (V₀=3 litre) by applying required pressure. If the bulk...
- A new unit (α) of length is chosen such that it is equal to the speed of light in vacuum. What is the distance between Venus and...
- Consider the equation H= x^p ^qE^r t^s , where H = magnetic field; E = electric field, ε = permittivity, x = distance, t = time....
- A car moving with a speed of 54 km/h takes a turn of radius 20 m. A simple pendulum is suspended from the ceiling of the car....
- A gas balloon is going up with a constant velocity of 10 m/s. When this balloon reached a height of 75 m, a stone is dropped from...
- A thin biconvex lens is prepared from the glass (μ = 1.5) both curved surfaces of which have equal radii of 20 cm each. Left side...