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AP Intermediate 2nd Year Dual Nature of Radiation and Matter — practice questions — page 2

Explore 61 free Dual Nature of Radiation and Matter questions in AP Intermediate 2nd Year Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Dual Nature of Radiation and Matter questions and exercises with answers

Showing questions 31–60 of 61.

Dual nature bingoRead the answer and worked solution →Photoelectric emission was discovered in the year:Read the answer and worked solution →Who discovered photoelectric emission?Read the answer and worked solution →Hallwachs and Lenard investigated photoelectric emission during:Read the answer and worked solution →Lenard observed photoemission when he used radiation that was:Read the answer and worked solution →The minimum frequency below which no photoemission occurs is the:Read the answer and worked solution →The minimum energy needed for an electron to escape a metal is the:Read the answer and worked solution →The work function is usually measured in:Read the answer and worked solution →One electron volt is the energy gained by an electron accelerated through:Read the answer and worked solution →Which metal has the highest work function?Read the answer and worked solution →Who performed the pioneering oil-drop experiment?Read the answer and worked solution →In interaction with matter, radiation behaves as if made of:Read the answer and worked solution →The energy of a photon is given by:Read the answer and worked solution →The momentum of a photon is given by:Read the answer and worked solution →A photon travels at a speed equal to that of:Read the answer and worked solution →Increasing the intensity of light of a given wavelength increases the:Read the answer and worked solution →Photon energy is independent of the radiation's:Read the answer and worked solution →In a photon-particle collision, what may not be conserved?Read the answer and worked solution →Who proposed the idea of matter waves in 1924?Read the answer and worked solution →De Broglie was a physicist of which nationality?Read the answer and worked solution →De Broglie was awarded the Nobel Prize in Physics in:Read the answer and worked solution →The wave nature of electrons was confirmed by Davisson and:Read the answer and worked solution →The de Broglie hypothesis of matter waves supports the stationary orbits of:Read the answer and worked solution →Place the discoveries in timeRead the answer and worked solution →Match each name to the workRead the answer and worked solution →True or false on dual natureRead the answer and worked solution →Conserved or not in a collisionRead the answer and worked solution →Fill the gaps on dual natureRead the answer and worked solution →Quick picks on dual natureRead the answer and worked solution →Spot the one that does not fitRead the answer and worked solution →

Worked practice questions

Dual nature bingo

Read exercise and reference answers
Clues and terms
  1. Clue
    Least energy needed to free an electron.
    Item
    Work function
  2. Clue
    Unit the work function is quoted in.
    Item
    Electron volt
  3. Clue
    Frequency below which nothing is emitted.
    Item
    Threshold
  4. Clue
    Current when every electron is collected.
    Item
    Saturation
  5. Clue
    Potential at which the current is zero.
    Item
    Stopping
  6. Clue
    One quantum of radiant energy.
    Item
    Photon
  7. Clue
    Explained the effect with light quanta.
    Item
    Einstein
  8. Clue
    Gave matter its own wavelength.
    Item
    De Broglie
  9. Clue
    Wave carried by a moving particle.
    Item
    Matter wave
Instructions
Read each clue and tap the term it describes.
_Source: syllabus Physics, Ch 11 'Dual Nature of Radiation and Matter'_

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Photoelectric emission was discovered in the year:

  1. 1887
  2. 1897
  3. 1877
  4. 1867
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Correct answer: A. 1887

1. The discovery came out of experiments on electromagnetic waves. 2. The phenomenon of photoelectric emission was discovered in 1887. 3. So the correct answer is 1887. _Source: syllabus Physics Part II, Ch 11 'Dual Nature of Radiation and Matter'_

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Who discovered photoelectric emission?

  1. Hull
  2. Hertz
  3. Hahn
  4. Hess
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Correct answer: B. Hertz

1. The discovery was made while producing electromagnetic waves by a spark discharge. 2. It was made by Heinrich Hertz. 3. So the correct answer is Hertz. _Source: syllabus Physics Part II, Ch 11 'Dual Nature of Radiation and Matter'_

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