Physics
General
Easy
Question
A thin uniform annular disc (See figure) of mass M has outer radius 4R and inner radius 3R. The work required to take a unit mass from point on its axix to infinity is....
The correct answer is:
Related Questions to study
chemistry-
Aluminium chloride exists as dimer, 
in solid state as well as in solution of non-polar solvents such as benzene. When dissolved in water, it gives
Aluminium chloride exists as dimer, in solid state as well as in solution of non-polar solvents such as benzene. When dissolved in water, it gives
chemistry-General
chemistry-
Which of the following is a non-metal.</strong
Which of the following is a non-metal.</strong
chemistry-General
physics
What does not change in the field of central force
What does not change in the field of central force
physicsGeneral
physics
If r denotes the distance between the sun and the earth, then the angular momentum of the earth around the sun is proportional to
If r denotes the distance between the sun and the earth, then the angular momentum of the earth around the sun is proportional to
physicsGeneral
physics-
Which from the following is a scalar ?
Which from the following is a scalar ?
physics-General
physics-
In the above figure 
and 
are two vectors. What from followings is true
In the above figure and are two vectors. What from followings is true
physics-General
physics-
As shown in figure, the block of 2 kg at one end and the other of 3 kg at the other end of a light string are connected. It the system remains stationary find the magnitude and direction of the frictional force, 
As shown in figure, the block of 2 kg at one end and the other of 3 kg at the other end of a light string are connected. It the system remains stationary find the magnitude and direction of the frictional force,
physics-General
physics-
A block of mass 300 kg is set into motion on a frictionless horizontal surface with the help of frictionless pulley and a rope system as shown in figure. What horizontal force F should be applied to produce in the block an acceleration of 
A block of mass 300 kg is set into motion on a frictionless horizontal surface with the help of frictionless pulley and a rope system as shown in figure. What horizontal force F should be applied to produce in the block an acceleration of
physics-General
physics
The radius of orbit of a planet is two times that of earth. The time period of planet is....... years.
The radius of orbit of a planet is two times that of earth. The time period of planet is....... years.
physicsGeneral
physics
If the velocity of planet is given by v=G4 Mb R' then
If the velocity of planet is given by v=G4 Mb R' then
physicsGeneral
Physics-
A goods train is moving with constant acceleration. when engine passes through a signal its speed is 
. Midpoint of the train passes the signal with speed 
. What will be the speed of the last wagon?
A goods train is moving with constant acceleration. when engine passes through a signal its speed is . Midpoint of the train passes the signal with speed . What will be the speed of the last wagon?
Physics-General
physics
The period of moon's rotation around the earth is nearly 29 days. If moon's mass were 2 fold its present value and all other things remained unchanged the period of moon’s rotation would be nearly .....days
The period of moon's rotation around the earth is nearly 29 days. If moon's mass were 2 fold its present value and all other things remained unchanged the period of moon’s rotation would be nearly .....days
physicsGeneral
physics-
A particle moves with a constant acceleration 2 m/s. Its intial velocity is 10 ms. Fad velocity after second.
A particle moves with a constant acceleration 2 m/s. Its intial velocity is 10 ms. Fad velocity after second.
physics-General
physics
The maximum and minimum distance of a comet from the sun are 8
m and 1.6 m. If its velocity when nearest to the sun is 60ms-1, What will be its velocity in ms-1 when it is farthest ?
The maximum and minimum distance of a comet from the sun are 8m and 1.6 m. If its velocity when nearest to the sun is 60ms-1, What will be its velocity in ms-1 when it is farthest ?
physicsGeneral
chemistry-
Least ionic character is found in
Least ionic character is found in
chemistry-General
