Radioactivity B Quiz (Theory)

Question 1 of 56

1. Question

clouds come together due to attraction . rises which helps overcome these by providing energy .so nuclear takes place.

Question 2 of 56

2. Question

( i ) number of atoms of = x 10 ^ 20

number of atoms of = x 10 ^ 20

( ii ) Many will have and it will have a lot.

Question 3 of 56

3. Question

frequency electromagnetic .

Question 4 of 56

4. Question

( i ) that is required for the material source atoms to .

( ii ) 48 _ >

        = / 12

       = half life

        N = 4

      / 2

    = 16000 / 2 ^ 4

    16000 / 4

Number = ( final answer )

Question 5 of 56

5. Question

An alpha particle :

A gamma ray : electromagnetic , high

Question 6 of 56

6. Question

rays pass out of the or there is a chance to be stopped by the body.
Therefore chances of to the body are

Question 7 of 56

7. Question

( i ) 11 , protons,13

11 electrons will be ,the which contains 11 and B joined together.

Question 8 of 56

8. Question

( i ) 1) particles get in just a few elements of ( air ).

2) takes time in some way.

( ii ) distance .

Question 9 of 56

9. Question

( i ) protons and 78

( ii ) of at least 1 or beta or rays.

electrons from air .

Question 10 of 56

10. Question

( i )

Question 11 of 56

11. Question

1. Nuclear
2. rays

Question 12 of 56

12. Question

( i ) Radioactive is a process.

( ii ) count = ( final answer )

Question 13 of 56

13. Question

rays which have very or very wavelength.

Question 14 of 56

14. Question

Question 15 of 56

15. Question

( i ) 1) time of the .

2)

( ii ) Radioactive emissions is a process.

Question 16 of 56

16. Question

iii ) particles are , Gamma rays are .

Question 17 of 56

17. Question

rays produce little or no .

Question 18 of 56

18. Question

1. for beta and rays is much while the ionization is .
More health in this case.

Question 19 of 56

19. Question

enough so the body is not for a long

Question 20 of 56

20. Question

( ii ) alpha charged.

Deflected because of the plate.

Question 21 of 56

21. Question

1. the exposure.
2. .

Question 22 of 56

22. Question

( ii ) on the deflector without ,then we will measure it with the absorber.

( iii ) As the count is without absorber, therefore it indicates that particles are being .

Question 23 of 56

23. Question

82 , electrons ,127 , neutrons and 82 together form the of the atom.
82 that orbit the .

Question 24 of 56

24. Question

( Gamma ) ,
( Gamma ) so they don’t get affected.

Question 25 of 56

25. Question

1. of emission .
of emissions.

Question 26 of 56

26. Question

Ionising effects : > beta >

effect : gamma > > alpha

Question 27 of 56

27. Question

( i ) more proton or one neutron ,
basically neutron becomes a .

Question 28 of 56

28. Question

( i ) friction = 1

( ii ) Decay too , constantly.

( iii ) 1) Number of

Number of

2) Number of

Question 29 of 56

29. Question

Question 30 of 56

30. Question

( i ) So Americium – 241 will last ,so the smoke will work for .

( ii ) 3

Question 31 of 56

31. Question

( i ) that is always present and it cannot be from the .

( ii ) 1) Nuclear
1. rays
( iii ) count rate = counts / minutes.

Question 32 of 56

32. Question

( i ) the number ( atomic number),

The number ( mass number ) ,

Question 33 of 56

33. Question

Neutron the nucleus ,
undergoes splitting which causes nuclei to be , energy is also

Question 34 of 56

34. Question

( i ) cells .

( ii ) It will keep the source at a so radiation will come through the .

Question 35 of 56

35. Question

( i ) (atoms) and 4

( ii ) (atoms) 3 and

( iii ) (atoms) and 4 ( final answer )

Question 36 of 56

36. Question

( i ) Not uploaded in the presentation.

( ii ) speed travelling

( iii ) background ,

No change in .

Question 37 of 56

37. Question

( i ) emits or nuclear

( ii ) a long to decay to half of its size.

Question 38 of 56

38. Question

( i ) (gas) waste from a power station.

( ii ) can cause in human beings / animals .

( iii ) number of protons :

Number of neutrons :

( iv ) particles get by the .

Question 39 of 56

39. Question

( i ) number = 17

( ii ) nucleon number = ( final answer )

Question 40 of 56

40. Question

( i ) for some measurable quantity to halve the number of .

( ii ) time = days.

Question 41 of 56

41. Question

Nuclear that is present in the .

Question 42 of 56

42. Question

( i ) The it takes for the number of in a source to halve.

( ii ) 200,000 / 2 ^ n =

         = 2 ^ n

            n=

              = x 3

Age = years ( final answer )

( iii ) By this time little will be left.

Question 43 of 56

43. Question

( i ) 1) waste

2) rays

( ii ) 1) background count rate = counts / minutes

2) count rate due to sample = counts / minutes

Half life = days

Question 44 of 56

44. Question

( i ) taken by the source to halve its

( ii ) Alpha gets stopped by the ,gamma rays can the body.

( iii ) It takes time for to .
( iv ) Radioactive for

Question 45 of 56

45. Question

Nuclear power disposal of waste which is hence the radiation has .

Question 46 of 56

46. Question

( i ) -14 has two more .

( ii ) The number of protons.

Question 47 of 56

47. Question

( i ) 1) waste

2) rays

( ii ) 1) background count rate = counts / minutes

2) count rate due to sample = counts / minutes
1. Half life = days

Question 48 of 56

48. Question

( i ) process .

( ii) time taken = hours .

( iii ) waste.

Question 49 of 56

49. Question

ANSWERS:

( i ) ( Geiger muller tube).

( ii ) Lead which will act as a .

( iii ) tubes will be used to take several of the rock.

Readings and ignore readings .

Question 50 of 56

50. Question

which have the same number of .

Question 51 of 56

51. Question

( i ) background not be down to as rays will pass.

( ii ) Not sensible, all will be absorbed reach the .

Question 52 of 56

52. Question

( i ) 2 and neutrons ( joined together ).

( ii ) It is charged; it pulls electrons from of air.

( iii ) 1. Beta particles,
1. 2. Gamma ,

Question 53 of 56

53. Question

Electromagnetic high or small .

Question 54 of 56

54. Question

Nuclei ,because they are charged. High energy is needed to overcome this.

Question 55 of 56

55. Question

( i ) protons,6 , neutrons.
protons + 8 will be in the combined.
6 element will them.

( ii ) 1 ) different number of

2) number of protons

Question 56 of 56

56. Question

( i ) time = x 10 ^ 6 ( final answer )

( ii ) emissions is a process.