Physics questions
20027 published questions with worked solutions.
- The mass number of nucleus having radius equal to half of the radius of nucleus with mass number 192 is
- Consider two physical quantities A and B related to each other as E = B - x^2 At where E, x and t have dimensions of energy,...
- The measured value of the length of a simple pendulum is 20 cm with 2 mm accuracy. The time for 50 oscillations was measured to...
- The speed of sound in oxygen at S.T.P. will be approximately (given, R = 8.3 JK⁻¹, γ = 1.4)
- An AC voltage V = 20 sin 200πt is applied to a series LCR circuit which drives a current I = 10 sin(200πt + π/3). The average...
- The resistance per centimeter of a meter bridge wire is r, with X Ω resistance in left gap. Balancing length from left end is at...
- A small spherical ball of radius r, falling through a viscous medium of negligible density has terminal velocity 'v'. Another...
- Force between two point charges q₁ and q₂ placed in vacuum at 'r' cm apart is F. Force between them when placed in a medium...
- By what percentage will the illumination of the lamp decrease if the current drops by 20%?
- A body of mass 2 kg begins to move under the action of a time dependent force given by F = (6t i + 6t^2 j) N. The power developed...
- If two vectors A⃗ and B⃗ having equal magnitude R are inclined at an angle θ, then
- Two identical spheres each of mass 2 kg and radius 50 cm are fixed at the ends of a light rod so that the separation between the...
- A body of mass 'm' is projected with a speed 'u' making an angle of 45° with the ground. The angular momentum of the body about...
- The magnetic flux φ (in weber) linked with a closed circuit of resistance 8 Ω varies with time (in seconds) as φ = 5t² – 36t + 1....
- Two circular coils P and Q of 100 turns each have same radius of π cm. The currents in P and R are 1 A and 2 A respectively. P...
- A nucleus has mass number A₁ and volume V₁. Another nucleus has mass number A₂ and Volume V₂. If relation between mass number is...
- Light from a point source in air falls on a convex curved surface of radius 20 cm and refractive index 1.5. If source is located...
- Four identical particles of mass m are kept at the four corners of a square. If the gravitational force exerted on one of the...
- Two charges q and 3q are separated by a distance 'r' in air. At a distance x from charge q, the resultant electric field is zero....
- When a metal surface is illuminated by light of wavelength λ, the stopping potential is 8V. When the same surface is illuminated...