Field particle of Electromagnetic interaction is _________?

Related Mcqs:

1. 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

2. The charged particle enters the uniform magnetic field in such a way that its initial velocity is not perpendicular to the field the orbit will be__________________?

   A. a circle
   B. a spiral
   C. an ellipse
   D. helix

3. The penetration power of alpha particle as compared to beta particle is_______________?

   A. 10 times more
   B. 100 times more
   C. 100 times less
   D. 10 times less

4. An electron enters a region where the electric field E is perpendicular to the magnetic field B. It will suffer no deflection if_________________?

   A. E = BeV
   B. B = eE/V
   C. E = BV
   D. E = BeV/2

5. 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

6. If the plane of the rectangular coil is parallel to the magnetic field (i.e radial magnetic field) the torque on the coil is_____________________?

   A. τ = NIAB cosφ
   B. τ = NIAB sinφ
   C. τ = NIAB tanφ
   D. τ = NIAB

7. An electromagnetic wave consists of _____________________?

   A. Electric and magnetic fields moving parallel to each other
   B. Magnetic field moving with velocity of light in space
   C. Electric field moving with velocity of light
   D. Electric and magnetic fields moving perpendicular to each other

8. The direction of propagation of an electromagnetic waves is________________?

   A. Perpendicular to electric field
   B. Perpendicular to both electric and magnetic field
   C. Perpendicular to magnetic field
   D. Parallel to electric and magnetic field

9. Electromagnetic waves transport___________________?

   A. Energy
   B. Momentum
   C. Mass
   D. Heat

10. Electromagnetic waves emitted from antenna are________________?

    A. Stationary
    B. Longitudinal
    C. Transverse
    D. All the above