Physics questions
20027 published questions with worked solutions.
- A large number of water drops, each of radius r, combine to have a drop of radius R. If the surface tension is T and mechanical...
- A person standing on a spring balance inside a stationary lift measures 60 kg. The weight of that person if the lift descends...
- In an electrical circuit, a battery is connected to pass 20 C of charge through it in a certain given time. The potential...
- A radiation is emitted by 1000 W bulb and it generates an electric field and magnetic field at P, placed at a distance of 2 m....
- A boy pushes a box of mass 2 kg with a force F =(20 i +10 j )N on a frictionless surface. If the box was initially at rest,...
- The mass per unit length of a uniform wire is 0.135 g/cm. A transverse wave of the form y = –0.21 sin (x + 30t) is produced in...
- In a series LCR resonant circuit, the quality factor is measured as 100. If the inductance is increased by two fold and...
- The maximum and minimum amplitude of an amplitude modulated wave are 16V and 8V respectively. The modulation index for this...Not in JEE or NEET syllabus
- The bulk modulus of a liquid is 3 10^ 10 Nm^ -2 . The pressure required to reduce the volume of liquid by 2% is
- Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In an...
- Identify the pair of physical quantities which have different dimensions.
- A projectile is projected with velocity of 25 m/s at an angle with the horizontal. After t seconds its inclination with...
- A block of mass 10 kg starts sliding on a surface with an initial velocity of 9.8 ms^ -1 . The coefficient of friction between...
- A boy ties a stone of mass 100 g to the end of a 2 m long string and whirls it around in a horizontal plane. The string can...
- A vertical electric field of magnitude 4.9 10^ 5 N/C just prevents a water droplet of a mass 0.1 g from falling. The value charge...
- A particle experiences a variable force F = (4x i + 3y^2 j) in a horizontal x-y plane. Assume distance in meters and force is...
- The approximate height from the surface of earth at which the weight of the body becomes 1/3 of its weight on the surface of...
- A resistance of 40 is connected to a source of alternating current rated 220 V, 50 Hz. Find the time taken by the current to...
- The equations of two waves are given by : y_ 1 = 5 sin 2 (x - vt) cm, y_ 2 = 3 sin 2 (x − vt + 1.5) cm. These waves are...
- A plane electromagnetic waves travels in a medium of relative permeability 1.61 and relative permittivity 6.44. If magnitude of...