PHY 201 CBT PRACTICE TEST

1. The output per unit of the variable factor employed is called

2. Two particles approach each other with a speed 0.8c with respect to the laboratory.

Their relative speed is___________

3. The velocity of a charged particle to keep moving in the same direction, in a region

where electric and magnetic fields are perpendicular to each other ,is_______________

4. In the case v<<c, Lorentz transformation is the same as____________

5. Which of the following is the expression for Lorentz force

6. If the velocity of a charged particle in perpendicular electric and magnetic field is

7.27X10^6 m/s and the Electric field is 6X10^6 N/c,what should be the value of magnetic

field for velocity sector?

7. In Lorentzian relativity, if two events are simultaneous for one observer, they will be

simultaneous for all other observers as well.

8. In vacuum or free space, what observations are made?

9. Find the electric Flux density of a material with charge density 16 units in unit volume

10. Magnetic field can be produced by___________

11. Find the Flux enclosed of a material of Flux density 12 units in area of 80cm

12. Lorentz transformation equations hold for

13. Lorentz transformations are based on the principle of consistency of the velocity of
light.

14. Two particles approach each other with a velocity of 0.9c.What is their relative

velocity as observed by A

15. The entire theory of electromagnetic waves is contained in Maxwell’s equations.

16. What would be the mass of the body at rest,i fit explodes into two objects of mass 2
kg each moving with a speed 0.8c relative to the original body

17. Which of the following is Einstein’s mass energy relation?

18. The basic theorem/ principle used to obtain mass-energy relation is_____________

19. In which of the following form scan Maxwell’s equation not be represented?

20. The Faraday’s law states about which type of EMF

21. In metals which of the following equation will hold good?

22. Einstein energy mass equivalence is application on all the following except

23. A particle of mass ‘m0’ moves with speed 0.8c, where ‘c’ is the speed of light in

vacuum.The relativistic kinetic energy of the particle is nearly

24. Differential form of Gauss’s law in magneto statics is_____________

25. Find the Maxwell law derived from Ampere law

26. Find the charge density when the electric Flux density is given by 2xi+3yj+4zk

27. In an electromagnetic wave, the electric field of amplitude 6.2V/m oscillates with a
frequency of 2.4X10
10Hz. The Energy density of the wave is__________

28. When a particle is moving with a velocity of v light c relative to S, its velocity as

observed by an observer in the frame S

’ is_____________

29. The property of magnetic field to converge electrons is used in microscopes as

___________

30. Which of the following laws do not form a Maxwell equation?

31. A point charge of 10X10-6C is at the centre of a cubical Gaussian surface of sides
0.5m. What is the flux for the surface?

32. For Pair Production phenomenon to occur the photon must have energy,greater than

or equal to____________

33. Which of the following is the expression for the continuity equation?

34. The charge build up in the capacitor is due to which quantity?

35. Increase in all inputs by a certain percentage resulting in a relatively higher percentage increase in output is referred to as:

36. The divergence of which quantity will be zero