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CBSE Class 10 Refraction of Light and Lenses — practice questions — page 8

Explore 227 free Refraction of Light and Lenses questions in CBSE Class 10 Science. Open each question or exercise to read its content, reference answers and available explanation.

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Refraction of Light and Lenses questions and exercises with answers

Showing questions 211–227 of 227.

Who prescribes corrective lenses by stating their powers?Read the answer and worked solution →Convex lens or concave lens?Read the answer and worked solution →Match each term to its meaningRead the answer and worked solution →True or false about lensesRead the answer and worked solution →Fill the gaps on lensesRead the answer and worked solution →Sort each item by what it describesRead the answer and worked solution →Spot the one that does not fitRead the answer and worked solution →Order the working of a lens powerRead the answer and worked solution →Pick the right answer, quicklyRead the answer and worked solution →Match each optical law or formula with its mathematical definition:Read the answer and worked solution →Match each refractive index concept with its physical meaning:Read the answer and worked solution →Match each lens type with its optical power and focal length signs:Read the answer and worked solution →Match each optical component with its everyday role:Read the answer and worked solution →Match each anatomical part of the human eye with its physiological duty:Read the answer and worked solution →Match each vision defect with its optical cause and corrective spectacle lens:Read the answer and worked solution →Match each atmospheric optical phenomenon with its underlying principle:Read the answer and worked solution →Match Rayleigh scattering principles with observed celestial colors:Read the answer and worked solution →

Worked practice questions

Who prescribes corrective lenses by stating their powers?

  1. Ophidians
  2. Obsidians
  3. Octagons
  4. Opticians
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Correct answer: D. Opticians

1. The prescription names a power, not a length. 2. The power is quoted in dioptres. 3. Opticians do. _Source: syllabus Science, Ch 10 'Light - Reflection and Refraction'_

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Convex lens or concave lens?

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Left
Convex
Items
  1. Item
    Thick in middle
    Answer
    Convex
  2. Item
    Converges rays
    Answer
    Convex
  3. Item
    Positive power
    Answer
    Convex
  4. Item
    Converging lens
    Answer
    Convex
  5. Item
    Thick at edges
    Answer
    Concave
  6. Item
    Diverges rays
    Answer
    Concave
  7. Item
    Negative power
    Answer
    Concave
  8. Item
    Diverging lens
    Answer
    Concave
Right
Concave
Instructions
Swipe left for Convex, right for Concave.
_Source: syllabus Science, Ch 10 'Light - Reflection and Refraction'_

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Match each term to its meaning

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Matching pairs
  1. Left
    Refractive index
    Right
    Compares speeds of light
  2. Left
    Convex lens
    Right
    Thicker in the middle
  3. Left
    Concave lens
    Right
    Thicker at the edges
Instructions
Tap a term on the left, then tap its meaning.
_Source: syllabus Science, Ch 10 'Light - Reflection and Refraction'_

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