Physics questions
20027 published questions with worked solutions.
- A wire of resistance 20 Ω is divided into 10 equal parts. A combination of two parts are connected in parallel and so on. Now...
- The current in an inductor is given by I = (3t + 8) where t is in second. The magnitude of induced emf produced in the inductor...
- To find the spring constant (k) of a spring experimentally, a student commits 2% positive error in the measurement of time and 1%...
- A bullet of mass 50 g is fired with a speed 100 m/s on a plywood and emerges with 40 m/s. The percentage loss of kinetic energy...
- Electromagnetic waves travel in a medium with speed of 1.5 × 10⁸ ms⁻¹. The relative permeability of the medium is 2.0. The...
- Which of the following phenomena does not explain by wave nature of light (A) reflection (B) diffraction (C) photoelectric effect...
- While measuring diameter of wire using screw gauge the following readings were noted. Main scale reading is 1 mm and circular...
- σ is the uniform surface charge density of a thin spherical shell of radius R. The electric field at any point on the surface of...
- The specific heat at constant pressure of real gas obeying PV² = RT equation is:
- Match List I with List II List-I: A. Torque B. Magnetic field C. Magnetic moment D. Permeability of free space List-II: I....
- Given below are two statements: Statement I: In an LCR series circuit, current is maximum at resonance. Statement II: Current in...
- A sample contains mixture of helium and oxygen gas. The ratio of root mean square speed of helium and oxygen in the sample, is:
- A light string passing over a smooth light pulley connects two blocks of masses m_1 and m_2 (where m_2 > m_1). If the...
- Four particles A, B, C, D of mass m2, m, 2m, 4m have same momentum, respectively. The particle with maximum kinetic energy is:
- A train starting from rest first accelerates uniformly up to a speed of 80 km/h for time t, then it moves with a constant speed...
- In photoelectric experiment energy of 2.48 eV irradiates a photo sensitive material. The stopping potential was measured to be...
- A big drop is formed by coalescing 1000 small droplets of water. The ratio of surface energy of 1000 droplets to that of energy...
- When a dc voltage of 100V is applied to an inductor, a dc current of 5A flows through it. When an ac voltage of 200V peak value...
- The refractive index of prism is μ = √3 and the ratio of the angle of minimum deviation to the angle of prism is one. The value...
- A wire of resistance R and radius r is stretched till its radius became r/2. If new resistance of the stretched wire is xR, then...