A field in which the work done in a moving a body along closed path is zero is called________________?

Related Mcqs:

1. A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ration of displacement to the covered path will be_____________?

   A. πR
   B. 2π R
   C. 0
   D. 4πR

2. When a particle of charge q and mass m enters into a uniform magnetic field B moving with a velocity v perpendicular to the direction for the field it describes a circular path of radius___________________?

   A. R=qB/mV
   B. R=mV/qB
   C. R=qmV/B
   D. R=qmB/V

3. When an electron moving with a uniform speed in a vacuum enters a magnetic field in a direction perpendicular to the field the subsequent path of the electron is ___________________?

   A. a straight line parallel to the field
   B. a parabola in a plane perpendicular to the field
   C. a circle in a plane perpendicular to the field
   D. a straight line along its initial direction

4. Moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R, the ratio of displacement to the covered path will be_______________?

   A. πR
   B. 2πR
   C. 0
   D. 4πR

5. When a body is moving along a circular path it covers a certain angle in a given interval of time. Such type of motion is__________________?

   A. Vibratory motion
   B. Linear motion
   C. Rotatory motion
   D. Angular motion

6. When a force is parallel to the direction of motion of the body, then work done on the body is_____________________?

   A. zero
   B. minimum
   C. infinity
   D. maximum

7. Two automobiles are 150 kilometers apart and traveling toward each other. One automobile is moving at 60km/h and the other is moving at 40km/h mph. In how many hours will they meet?

   A. 2.5
   B. 2.0
   C. 1.75
   D. 1.5
   E. 1.25

   Submitted by: Mansoor Ul Haque

8. If a body a mass of 2 kg is raised vertically through 2m, then the work done will be _________________?

   A. 38.2 J
   B. 392.1 J
   C. 39.2 J
   D. 3.92 J

9. Work done on the body equals to the _____________________?

   A. change in its K.E always
   B. change in its P.E always
   C. change in its K.E and change in its P.E
   D. neither change in K.E and nor change in its P.E

10. Magnetic force acting on a unit positive charge moving perpendicular to the magnetic field with a unit velocity is called____________________?

    A. magnetic flux
    B. magnetic field intensity
    C. magnetic induction
    D. self inductance