Popular Questions
- The velocity of a particle is given by v=√180-16x m/s. its acceleration will be
- The velocity of a particle is given by v=√180-16x m/s. its acceleration will be
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- Consider regular polygons with number of sides n=3,4,5.... as shown in the figure. The center of mass of all the polygons is at he..
- A photoelectric material having work-function phi0 is illuminated with the wavelength.
- A particle crossing the origin of coordinates at time t=0, moves in the xy-plane with a constant acceleration a in y-direction. If..
- A symmetric star shaped conducting wire loop is carrying a steady state current 1 as shown in the figure. The distance between the..
- The position coordinates of a particle moving in XY-plane as a function of time t are
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- A particle moves along X-axis. The position x of particle w.r.t. time t from origin given by x=b0+b1 t+b2(t^2). The acceleration o..
- A body starts from rest with uniform acceleration. If its velocity after n second is V, then its displacement in the last 2 s is
- A body of mass m thrown horizontally woth velocity v from the top of tower of height h, touches the level ground at distance of 25..
- A ball A is thrown up vertically with a speed u and at the same instant another ball B is released from a height h. At time t, the..
- A bullet fired into a fixed wooden block losses half of its velocity after penetrating 40 cm. It comes to rest after penetrating a..
- A ball is dropped from a bridge at a height of 176.4 m over a river. After 2s, a second ball is thrown straight downwards. What sh..
- Which of the following are correct?
- Three vectors P,Q and R are shown in the figure. Let S be any point on the vector R.
- A rocket is launched normal to the surface of the earth, away from the sun, along the line joining the sun and the Earth. Th sun i..
- The velocity of a body of mass 20 kg decreases from 20 ms^-1 to ms^-1 in a distance of 100 m. Force on the body is
- Displacement (x) of a particle is related to time (t) as x=at+bt^2-ct3 where a,b and c are constants of the motion. The velocity o..
- A person measures the depth of a well by measuring the time interval between dropping a stone and receiving the sound of impact wi..
- A body thrown vertically up to reach its maximum height in t second. The total time from the time of projection to reach a point a..
- Two cars A and B are moving with same speed of 45 kmh^-1 along same direction. If a third car C coming from the opposite direction..
- The distance travelled by an object along a straight line in time t is given by s=3-4t+5(t)^2, the initial velocity of the object ..
- A bullet emerges from a barrel of length 1.2 m with a speed of 640 ms^-1. Assuming constant acceleration, the approximate time tha..
- A body moving with a uniform acceleration croses a distance of 65 m in the 5th second and 105 m in 9th second. How far will it go ..
- Three ballsA, B and C are thrown from a height h with equal speed upwards, downwards and horizontally, respectively. What is the r..
- The instantaneous voltages at three terminals marked X, Y and Z are given by
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- When a bullet is fired at a target, its velocity decreases by half after penetrating 30 cm into it. The additional thickness it wi..
- A body is moving along a straight line path with constant velocity. At an instant of time the distance travelled by it is s and it..
- A point initially at rest moves along X-axis. Its acceleration varies with time as a=(6t+5)m s^-2. If it starts from origin, the d..
- A point charge +Q is placed just outside an imaginary hemispherical surface of radius R as shown in the figure. Which of the follo..
- Two balls are dropped to the ground from different heights. One ball is dropped 2 s after the other but they both strike the groun..
- A ball is thrown vertically upwards with a velocity of 25 ms^-1 from the top of a tower of height 30 m. How long will it travel be..
- A ball which is at rest is dropped from a height h meter. As it bounces off the floor its speed is 80% of what it was just before ..
- Two bodies of different masses are dropped from heights of 16 m and 25 m, respectively. The ratio of the time taken by them to rea..
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