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WBJEE Dual Nature of Radiation and Matter — practice questions — page 2

Explore 41 free Dual Nature of Radiation and Matter questions in WBJEE 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 31–41 of 41.

Pop the ultraviolet metalsRead the answer and worked solution →One word is wrongRead the answer and worked solution →Order the argumentRead the answer and worked solution →Radiation and matterRead the answer and worked solution →Which one does not belongRead the answer and worked solution →Does it change the energyRead the answer and worked solution →Spot the false statementRead the answer and worked solution →Which ones belongRead the answer and worked solution →Knock out the true statementsRead the answer and worked solution →Dual nature bingoRead the answer and worked solution →Which finding is itRead the answer and worked solution →

Worked practice questions

Pop the ultraviolet metals

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Other terms
  1. Copper wire
  2. Glass
Matching terms
  1. Zinc
  2. Cadmium
  3. Magnesium
Instructions
Pop the metals that respond only to ultraviolet. Leave the rest.
_Source: syllabus Physics Part II, Ch 11 'Dual Nature of Radiation and Matter'_

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One word is wrong

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Questions
  1. Statement parts
    1. Brighter
    2. light
    3. raises
    4. the
    5. electron
    6. energy
    Correction
    does not raise
    Incorrect part
    raises
  2. Statement parts
    1. Below
    2. the
    3. threshold
    4. frequency
    5. emission
    6. occurs
    Correction
    does not occur
    Incorrect part
    occurs
  3. Statement parts
    1. Stopping
    2. potential
    3. depends
    4. on
    5. the
    6. intensity
    Correction
    the frequency
    Incorrect part
    intensity
  4. Statement parts
    1. Einstein
    2. said
    3. energy
    4. is
    5. absorbed
    6. continuously
    Correction
    in quanta
    Incorrect part
    continuously
Instructions
Tap the single word that makes the sentence false.
_Source: syllabus Physics Part II, Ch 11 'Dual Nature of Radiation and Matter'_

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Order the argument

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Steps
  1. Light was shown to be a wave
  2. Ultraviolet light frees electrons
  3. Below a threshold nothing happens
  4. Brighter light adds no energy
  5. Radiation must come in quanta
Instructions
Tap the steps of the argument in the order they were found.
_Source: syllabus Physics Part II, Ch 11 'Dual Nature of Radiation and Matter'_

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