Physics questions
20027 published questions with worked solutions.
- A square loop of side 10 cm and resistance 0.7 Ω is placed vertically in east-west plane. A uniform magnetic field of 0.20 T is...
- If mass is written as m = kc^P G^ −1/2 h^ 1/2 then the value of P will be : (Constants have their usual meanings with k a...
- A particle of charge '–q' and mass 'm' moves in a circle of radius 'r' around an infinitely long line charge of linear charge...
- Match List I with List II List I: A. Gauss's law of magnetostatics, B. Faraday's law of electro magnetic induction, C. Ampere's...
- A beam of unpolarised light of intensity I₀ is passed through a Polaroid A and then through another Polaroid B which is oriented...
- An electron revolving in nᵗʰ Bohr orbit has magnetic moment μₙ. If μₙ ∝ nˣ, the value of x is
- In a nuclear fission reaction of an isotope of mass M, three similar daughter nuclei of same mass are formed. The speed of a...
- Escape velocity of a body from earth is 11.2 km/s. If the radius of a planet be one third the radius of earth and mass be...
- A block of mass m is placed on a surface having vertical cross-section given by y = x²/4. If coefficient of friction is 0.5, the...
- If three moles of monoatomic gas (γ = 5/3) is mixed with two moles of a diatomic gas (γ = 7/5), the value of adiabatic exponent γ...
- If 50 Vernier divisions are equal to 49 main scale divisions of a traveling microscope and one smallest reading of main scale is...
- When a potential difference V is applied across a wire of resistance R, it dissipates energy at a rate W. If the wire is cut into...
- A power transmission line feeds input power at 2.3 kV to a step-down transformer with its primary winding having 3000 turns. The...
- The current of 5 A flows in a square loop of sides 1 m is placed in air. The magnetic field at the centre of the loop is X√2 ×...
- Two discs of moment of inertia I₁ = 4 kg m² and I₂ = 2 kg m², about their central axes and normal to their planes, rotating with...
- Two resistance of 100 Ω and 200 Ω are connected in series with a battery of 4 V and negligible internal resistance. A voltmeter...
- A vector has magnitude same as that of A = 3 i + 4 j and is parallel to B = 4 i + 3 j. The x and y components of this vector in...
- A simple pendulum is placed at a place where its distance from the earth's surface is equal to the radius of the earth. If the...
- A big drop is formed by coalescing 1000 small identical drops of water. If E₁ be the total surface energy of 1000 small drops of...
- The electrostatic potential due to an electric dipole at a distance 'r' varies as :