Two parallel beams of positrons moving in the same direction will________?

Related Mcqs:

1. 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

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. The direction of the linear velocity of a body moving in a circle is______________?

   A. along the axis of rotation
   B. along the tangent
   C. directed towards the centre
   D. directed away from the centre

5. If east, west, north, south, up and down are representing the direction of unit vectors, then east x south has the direction along_____________?

   A. West
   B. North
   C. Down
   D. Up

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

   A. electric field
   B. conservative field
   C. electromagnetic field
   D. gravitational field

8. A moving coil galvanometer of resistance 100? gives half scale deflection for a current of 20mA. What will be the potential difference across it ?

   A. 4 volt
   B. 5 volt
   C. 2 volt
   D. 0.4 volt

9. The effective way to increase the sensitivity of a moving coil galvanometer is to___________________?

   A. use a very long and fine suspension
   B. use a coil of very large area
   C. use a coil with very large number of turns
   D. use a very strong magnetic field

10. A man standing near a fast moving train may fall___________?

    A. On the train
    B. Away from the train
    C. Towards the train
    D. On himself