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WBJEE Dual Nature of Matter — practice questions — page 2

Explore 38 free Dual Nature of 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 Matter questions and exercises with answers

Showing questions 31–38 of 38.

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

Radiation and matter

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Left
Radiation
Items
  1. Region
    Radiation
    Item
    Photons
  2. Region
    Radiation
    Item
    Frees electrons
  3. Region
    Matter
    Item
    Matter waves
  4. Region
    Matter
    Item
    de Broglie
  5. Region
    both
    Item
    Shows duality
  6. Region
    both
    Item
    Has a wavelength
Right
Matter
Instructions
Drop each idea into where it belongs.
_Source: syllabus Physics Part II, Ch 11 'Dual Nature of Radiation and Matter'_

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Which one does not belong

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Questions
  1. Items
    1. Zinc
    2. Carbon
    3. Cadmium
    Odd item
    Carbon
  2. Items
    1. Einstein
    2. de Broglie
    3. Gravity
    Odd item
    Gravity
  3. Items
    1. Wavelength shift
    2. Work function
    3. Threshold
    Odd item
    Wavelength shift
  4. Items
    1. Photocurrent
    2. Sound level
    3. Stopping potential
    Odd item
    Sound level
Instructions
Tap the item that does not fit with the others.
_Source: syllabus Physics Part II, Ch 11 'Dual Nature of Radiation and Matter'_

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Does it change the energy

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Questions
  1. Answer
    No change
    Question
    Doubling the light intensity
    Choices
    1. No change
    2. Raises it
  2. Answer
    Raises it
    Question
    Raising the light frequency
    Choices
    1. Raises it
    2. No change
  3. Answer
    Raises it
    Question
    Changing the emitter metal
    Choices
    1. Raises it
    2. No change
  4. Answer
    No change
    Question
    Brighter light of the same colour
    Choices
    1. No change
    2. Raises it
  5. Answer
    Raises it
    Question
    Shorter wavelength light
    Choices
    1. Raises it
    2. No change
  6. Answer
    No change
    Question
    More photons per second
    Choices
    1. No change
    2. Raises it
Instructions
Pick the right answer each time. Too many wrong picks and the tower falls.
_Source: syllabus Physics Part II, Ch 11 'Dual Nature of Radiation and Matter'_

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