Home
Class 12
PHYSICS
A beam of fast moving alpha particles we...

A beam of fast moving alpha particles were directed towards a thin film of gold. The parts `A', B'` and `C'` of the transmitted and refected beams correcponding ro the incident parts `A, B` and `C` of the beam, are shown in the adjoining diagram. The number of alpha particles in

A

B' will be minimum and in C' maximum

B

A' will be maximum and in B' minimum

C

A' will be minimum and in B' maximum

D

c' will be minimum and in B' maximum

Text Solution

Verified by Experts

The correct Answer is:
B

Because atom is hollow and whole mass fo atom is concentrated in a small centre called nucleus. So, A' will be maximum whille B' minimum.
Promotional Banner

Topper's Solved these Questions

  • ATOMS

    DC PANDEY|Exercise ASSERTION AND REASON|10 Videos
  • ATOMS

    DC PANDEY|Exercise MATCH THE COLUMNS|4 Videos
  • ATOMS

    DC PANDEY|Exercise Check point 12.3|15 Videos
  • ALTERNATING CURRENT

    DC PANDEY|Exercise JEE MAIN|63 Videos
  • CAPACITORS

    DC PANDEY|Exercise OBJECTIVE_TYPE|1 Videos

Similar Questions

Explore conceptually related problems

A beam of alpha - particle is incident on a gold foil . Corresponding to the incident beams A , B and C , the emergent beams A' , B' and C' . The transmission and deflection of alpha - particles through the foil take place such that

Answer the following questions, which help you understand the difference between Thomson’s model and Rutherford’s model better. (a) Is the average angle of deflection of -particles by a thin gold foil predicted by Thomson’s model much less, about the same, or much greater than that predicted by Rutherford’s model? (b) Is the probability of backward scattering (i.e., scattering of alpha -particles at angles greater than 90° ) predicted by Thomson’s model much less, about the same, or much greater than that predicted by Rutherford’s model? (c) Keeping other factors fixed, it is found experimentally that for small thickness t, the number of alpha -particles scattered at moderate angles is proportional to t. What clue does this linear dependence on t provide? (d) In which model is it completely wrong to ignore multiple scattering for the calculation of average angle of scattering of alpha -particles by a thin foil?

A parallel beam, of light of wavelength 100 nm passed through a sample of atomic hydrogen gas in ground state. (a) Assume that when a phton supplies some of its energy to a hydrogen atom, the rest of the energy appears an another photon moving in the same direction as the incident photon. Neglecting the light emitted by the excited hydrogen atoms in the direction of the incident beam, what wavelengths may be observed in the transmitted beam? (b) A radition detector is placed near the gas to detect radiation coming perpendicular to the incident beam. Find the wavelength of radiation that may be detected by the detector.

A beam of mixture of alpha particle and protons are accelerted through same potential difference before entering into the magnetic field of strength B. if r_1=5 cm then r_2 is

A beam of equally charged particles after being accelerated through a voltage V enters into a magnetic field B as shown in Fig. 1.31. It is found that all the particles hit the plate between C and D. Find the ratio between the masses of the heaviest and lightest particles of the beam.

A narrow beam of alpha particles with kinetic energy 1.0 MeV falls normally on a platinum foil 1.0 mu thick. The scattered particles are observed at an angle of 60^(@) to the incident beam direction by means of a counter with a circular inlet area 1.0 cm^(2) located at the distacne 10 cm from the scattering section of the foil. What fraction of scattered alpha particles reaches the counter inlet?

A narrow beam of alpha particles with kinetic energy T== 0.50 MeV falls normally on a golden foil whose t=mass of thickness is rho d= 1.5 mg//cm^(2) The beam intensity is I_(0)= 5.0.10^(5) particles per second. Find the number of alpha particles scattered by the foil during the time interval tau=30 m in into the angular interval: (a) 59-61^(@) , (b) over theta_(0)=60^(@) .

DC PANDEY-ATOMS-Taking it together
  1. A hydrogen-like atom emits rediationof frequency 2.7 xx 10^(15) Hz whe...

    Text Solution

    |

  2. Two H atoms in the ground state collide in elastically. The maximum am...

    Text Solution

    |

  3. A beam of fast moving alpha particles were directed towards a thin fil...

    Text Solution

    |

  4. Figure shows the enegry levels P, Q, R, S and G of an atom where G is ...

    Text Solution

    |

  5. The binding energy of a H-atom considering an electron moving aroun...

    Text Solution

    |

  6. If the intensity of an X-ray becomes (I(0))/(2) from I(0) after travel...

    Text Solution

    |

  7. In the following figure the energy levels of hydrogen atom have been s...

    Text Solution

    |

  8. The ionization energy of the electron in the hydrogen atom in its grou...

    Text Solution

    |

  9. If an electron is revolving around the hydrogen nucleus at a distance ...

    Text Solution

    |

  10. Imagine an atom made of a proton and a hypothetical particle of double...

    Text Solution

    |

  11. For a certain atom, there are energy levels A,B,C corresponds to energ...

    Text Solution

    |

  12. The electron in a hydrogen atom makes a transition n(1) rarr n(2), whe...

    Text Solution

    |

  13. If elements with principal quantum number ngt 4 were not allowed in na...

    Text Solution

    |

  14. The following diagram indicates the energy levels of a certain atom wh...

    Text Solution

    |

  15. The diagram shows the energy levels for an electron in a certain atom....

    Text Solution

    |

  16. When the voltage applied to and X-ray tube is increases from V(1)=10KV...

    Text Solution

    |

  17. The ionisation potential of hydrogen atom is -13.6 eV. An electron in...

    Text Solution

    |

  18. The distance of closest approach of an alpha-particle fired towards a ...

    Text Solution

    |

  19. The first excited state of hydrogen atom is 10.2 eV above its ground s...

    Text Solution

    |

  20. Hydrogen (1H^(1)) Deuterium (1H^(2)) singly ionized helium (2He^())^...

    Text Solution

    |