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ICSE Class 8 Light — practice questions — page 2

Explore 35 free Light questions in ICSE Class 8 Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Light questions and exercises with answers

Showing questions 31–35 of 35.

An optical image is erect. Does this distinguish concave from convex?Read the answer and worked solution →Match each optical mirror type with its primary image characteristic:Read the answer and worked solution →Match each optical phenomenon with its underlying principle:Read the answer and worked solution →Match each eye defect with its corrective lens:Read the answer and worked solution →Match each light ray property with its law of reflection:Read the answer and worked solution →

Worked practice questions

An optical image is erect. Does this distinguish concave from convex?

  1. No; neither can give erect images
  2. Yes; erect implies a convex mirror
  3. No; both can give erect images
  4. Yes; erect implies a concave mirror
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Correct answer: C. No; both can give erect images

A convex mirror gives erect images, and a concave mirror also does so when the object is inside its focus.

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Match each optical mirror type with its primary image characteristic:

  1. 1-A, 2-B, 3-C
  2. 1-B, 2-A, 3-C
  3. 1-C, 2-B, 3-A
  4. 1-A, 2-C, 3-B
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Correct answer: A. 1-A, 2-B, 3-C

Plane mirrors produce same-size virtual images. Concave mirrors can magnify real/virtual. Convex mirrors form diminished erect images.

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Match each optical phenomenon with its underlying principle:

  1. 1-A, 2-B, 3-C
  2. 1-B, 2-A, 3-C
  3. 1-C, 2-B, 3-A
  4. 1-A, 2-C, 3-B
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Correct answer: A. 1-A, 2-B, 3-C

Refraction bends light between media. Dispersion separates colors by wavelength. Total internal reflection traps light past critical angle.

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