Physics questions
20027 published questions with worked solutions.
- At absolute zero, Si acts asNot in JEE Advanced syllabus
- The energy band gap is maximum inNot in JEE Advanced syllabus
- The length of a simple pendulum executing simple harmonic motion is increased by 21%. The percentage increase in the time period...
- Dimension of 1 _0 _0 , where symbols have their usual meaning, are
- The physical quantities not having same dimensions are
- A car, moving with a speed of 50 km/hr, can be stopped by brakes after at least 6 m. If the same car is moving at a speed of 100...
- The co-ordinates of a moving particle at any time ' t ' are given by x = t^3 and y = t^3. The speed of the particle at time ' t '...
- A body travels a distance s in t seconds. It starts from rest and ends at rest. In the first part of the journey, it moves with...
- Two particles start simultaneously from the same point and move along two straight lines, one with uniform velocity u and the...
- A boy playing on the roof of a 10 m high building throws a ball with a speed of 10 m/s at an angle of 30^ with the horizontal....
- Two stones are projected from the top of a cliff h metres high, with the same speed u, so as to hit the ground at the same spot....
- A spring balance is attached to the ceiling of a lift. A man hangs his bag on the spring and the spring reads 49 N, when the lift...
- A marble block of mass 2 kg lying on ice when given a velocity of 6 m/s is stopped by friction in 10 s. Then the coefficient of...
- A block of mass M is pulled along a horizontal frictionless surface by a rope of mass m. If a force P is applied at the free end...
- A light spring balance hangs from the hook of the other light spring balance and a block of mass M kg hangs from the former one....
- A rocket with a lift-off mass 3.5 10^4 kg is blasted upwards with an initial acceleration of 10 m/s^2. Then the initial thrust of...
- Consider the following two statements: (A) Linear momentum of a system of particles is zero (B) Kinetic energy of a system of...
- A circular disc X of radius R is made from an iron plate of thickness t, and another disc Y of radius 4R is made from an iron...
- A particle performing uniform circular motion has angular frequency is doubled & its kinetic energy halved, then the new angular...
- Let F be the force acting on a particle having position vector r and T be the torque of this force about the origin. Then