Physics questions
20027 published questions with worked solutions.
- A student performed the experiment to measure the speed of sound in air using resonance air-column method. Two resonances in the...
- Under the influence of the Coulomb field of charge +Q, a charge −q is moving around it in an elliptical orbit. Find out the...
- A metal rod AB of length 10x has its one end A in ice at 0 °C and the other end B in water at 100 °C. If a point P on the rod is...
- A cylindrical vessel of height 500 mm has an orifice (small hole) at its bottom. The orifice is initially closed and water is...
- Two soap bubbles A and B are kept in a closed chamber where the air is maintained at pressure 8 N/m². The radii of bubbles A and...
- A steady current I goes through a wire loop PQR having shape of a right angle triangle with PQ = 3x, PR = 4x and QR = 5x. If the...
- A solid sphere of radius R has a charge Q distributed in its volume with a charge density = r^a, where κ and a are constants and...
- A 20 cm long string, having a mass of 1.0 g, is fixed at both the ends. The tension in the string is 0.5 N. The string is set...
- Length, breadth and thickness of a strip having a uniform cross section are measured to be 10.5 cm, 0.05 mm, and 6.0 µm,...
- A person sitting inside an elevator performs a weighing experiment with an object of mass 50 kg. Suppose that the variation of...
- A cube of unit volume contains 35 10^7 photons of frequency 10^ 15 Hz. If the energy of all the photons is viewed as the average...
- A single slit diffraction experiment is performed to determine the slit width using the equation, bd D = m , where b is the slit...
- List-I shows various functional dependencies of energy (E) on the atomic number (Z). Energies associated with certain phenomena...
- Two forces are such that the sum of their magnitudes is 18 N and their resultant is 12 N which is perpendicular to the smaller...
- Identify the pair whose dimensions are equal
- From a building two balls A and B are thrown such that A is thrown upwards and B downwards (both vertically). If v_A and v_B are...
- The minimum velocity (in ms^ -1 ) with which a car driver must traverse a flat curve of radius 150 m and coefficient of friction...
- A lift is moving down with acceleration a. A man in the lift drops a ball inside the lift. The acceleration of the ball as...
- A bead of weight w can slide on smooth circular wire in a vertical plane. The bead is attached by a light thread to the highest...
- A spring of force constant 800 N/m has an extension of 5 cm. The work done is extending it from 5 cm to 15 cm is