Physics questions
20027 published questions with worked solutions.
- A cricket ball of mass 0.15 kg is thrown vertically up by a bowling machine so that it rises to a maximum height of 20 m after...
- Average force exerted on a non-reflecting surface at normal incidence is 2.4 × 10⁻⁴ N. If 360 W/cm² is the light energy flux...
- A mixture of one mole of monoatomic gas and one mole of a diatomic gas (rigid) are kept at room temperature (27°C). The ratio of...
- Binding energy of a certain nucleus is 18 × 10⁸ J. How much is the difference between total mass of all the nucleons and nuclear...
- Paramagnetic substances: A. align themselves along the directions of external magnetic field. B. attract strongly towards...Not in JEE Advanced syllabus
- Young's modulus is determined by the equation given by Y = 49000 M dyne cm ^2 where M is the mass and ℓ is the extension of wire...
- Two planets A and B having masses m₁ and m₂ move around the sun in circular orbits of r₁ and r₂ radii respectively. If angular...
- A LCR circuit is at resonance for a capacitor C, inductance L and resistance R. Now the value of resistance is halved keeping all...
- Two charged conducting spheres of radii a and b are connected to each other by a conducting wire. The ratio of charges of the two...
- A player caught a cricket ball of mass 150 g moving at a speed of 20 m/s. If the catching process is completed in 0.1 s, the...
- The diameter of a sphere is measured using a vernier caliper whose 9 divisions of main scale are equal to 10 divisions of vernier...
- An electron with kinetic energy 5 eV enters a region of uniform magnetic field of 3 μT perpendicular to its direction. An...
- Resistance of a wire at 0°C, 100°C and t°C is found to be 10 Ω, 10.2 Ω and 10.95 Ω respectively. The temperature t in Kelvin...
- An electric field, E = 2 i + 6 j + 8 k 6 passes through the surface of 4 m² area having unit vector n = ( 2 i + j + k 6 ). The...
- A liquid column of height 0.04 cm balances excess pressure of soap bubble of certain radius. If density of liquid is 8 × 10³ kg...
- A closed and an open organ pipe have same lengths. If the ratio of frequencies of their seventh overtones is ( a - 1 a ) then the...
- A parallel beam of monochromatic light of wavelength 600 nm passes through single slit of 0.4 mm width. Angular divergence...
- In an alpha particle scattering experiment distance of closest approach for the α particle is 4.5 × 10⁻¹⁴ m. If target nucleus...
- In a hypothetical fission reaction ^ 236 _ 92 X → ^ 141 _ 56 Y + ^ 92 _ 36 Z + 3R. The identity of emitted particles (R) is:
- If ε₀ is the permittivity of free space and E is the electric field, then ε₀E² has the dimensions: