Physics questions
20027 published questions with worked solutions.
- A small soap bubble of radius 4 cm is trapped inside another bubble of radius 6 cm without any contact. Let P_2 be the pressure...
- The de-Broglie wavelength ( _B) associated with the electron orbiting in the second excited state of hydrogen atom is related to...
- A coil of cross-sectional area A having n turns is placed in a uniform magnetic field B. When it is rotated with an angular...
- Unpolarized light of intensity I is incident on a system of two polarizers, A followed by B. The intensity of emergent light is I...
- A power transmission line feeds input power at 2300 V to a step down transformer with its primary windings having 4000 turns,...
- The percentage errors in quantities P, Q, R and S are 0.5 %, 1 %, 3 % and 1.5 % respectively in the measurement of a physical...
- An oscillator of mass M is at rest in its equilibrium position in a potential V = 1 2 k(x - X)^2. A particle of mass m comes from...
- Both the nucleus and the atom of some element are in their respective first excited states. They get de-excited by emitting...
- The end correction of a resonance column is 1 cm. If the shortest length resonating with the tuning fork is 10 cm, the next...
- The relative uncertainty in the period of a satellite orbiting around the earth is 10^ -2 . If the relative uncertainty in the...
- Two moles of helium are mixed with n moles of hydrogen. If C_P C_V = 3 2 for the mixture, then the value of n is -
- A particle executes simple harmonic motion and is located at x = a, b and c at times t_0, 2t_0 and 3t_0 respectively. The...
- A galvanometer with its coil resistance 25 Ω requires a current of 1 mA for its full deflection. In order to construct an ammeter...
- Two sitar strings, A and B, playing the note 'Dha' are slightly out of tune and produce beats of frequency 5 Hz. The tension of...
- Suppose that the angular velocity of rotation of earth is increased. Then, as a consequence.
- Two identical conducting spheres, A and B, carry equal charge. They are separated by a distance much larger than their diameter,...
- A ray of light is incident at an angle of 60° on one face of a prism of angle 30°. The emergent ray of light makes an angle of...
- A carrier wave of peak voltage 14 V is used for transmitting a message signal. The peak voltage of modulating signal given to...Not in JEE or NEET syllabus
- A plane electromagnetic wave of wavelength has an intensity I. It is propagating along the positive Y-direction. The allowed...
- A thin circular plate of mass M and radius R has its density varying as (r) = _0 r with _0 as constant and r is the distance from...