Physics questions
20027 published questions with worked solutions.
- Two wires of same length and thickness having specific resistances 6 cm and 3 cm respectively are connected in parallel. The...
- A galaxy is moving away from the earth at a speed of 286 kms^ -1 . The shift in the wavelength of a red line at 630 nm is x 10^...
- An oil drop of radius 2 mm with a density 3g cm^ -3 is held stationary under a constant electric field 3.55 10^5 V m^ -1 in the...
- A thin circular ring of mass M and radius r is rotating about its axis with an angular speed . Two particles having mass m each...
- The time period of a simple pendulum is given by T = 2 g . The measured value of the length of pendulum is 10 cm known to a 1 mm...
- A constant power delivering machine has towed a box, which was initially at rest, along a horizontal straight line. The distance...
- What will be the average value of energy along one degree of freedom for an ideal gas in thermal equilibrium at temperature T?...
- A radioactive sample disintegrates via two independent decay processes having half lives T_ 1/2 ^ (1) and T_ 1/2 ^ (2)...
- In Young's double slit arrangement, slits are separated by a gap of 0.5 mm, and the screen is placed at a distance of 0.5 m from...
- A particle is travelling 4 times as fast as an electron. Assuming the ratio of de-Broglie wavelength of a particle to that of...
- In the experiment of Ohm's law, a potential difference of 5.0 V is applied across the end of a conductor of length 10.0 cm and...
- In a series LCR resonance circuit, if we change the resistance only, from a lower to higher value :
- An AC source rated 220 V, 50 Hz is connected to a resistor. The time taken by the current to change from its maximum to the rms...
- A loop of flexible wire of irregular shape carrying current is placed in an external magnetic field. Identify the effect of the...
- The time period of a satellite in a circular orbit of radius R is T. The period of another satellite in a circular orbit of...
- A particle performs simple harmonic motion with a period of 2 second. The time taken by the particle to cover a displacement...
- Two separate wires A and B are stretched by 2 mm and 4 mm respectively, when they are subjected to a force of 2 N. Assume that...
- A person is swimming with a speed of 10 m/s at an angle of 120° with the flow and reaches a point directly opposite on the other...
- A parallel plate capacitor has plate area 100 m^2 and plate separation of 10 m. The space between the plates is filled up to a...
- A bullet of mass 0.1 kg is fired on a wooden block to pierce through it, but it stops after moving a distance of 50 cm into it....