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🧾 CBSE · Class 10

Class 10 Science: Light – Reflection and Refraction Worksheet (with Answers)

A free, print-ready worksheet on Light – Reflection and Refraction for CBSE Class 10 Science, with a matching answer key. Use the sample below, or build your own with the exact mix of questions you need — no login, no ads.

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Sample worksheet

7 of 18 questions from this chapter. Generate your own for the full set, more variations, and a clean print layout.

  1. 1. For a spherical mirror, the focal length and radius of curvature are related by:
    • (a) f = R/4
    • (b) f = 2R
    • (c) f = R/2
    • (d) f = R
  2. 2. The mirror formula is:
    • (a) 1/v + 1/u = 1/f
    • (b) 1/v × 1/u = 1/f
    • (c) v + u = f
    • (d) 1/v − 1/u = 1/f
  3. 3. A convex mirror always forms an image that is:
    • (a) virtual and magnified
    • (b) real, inverted and magnified
    • (c) virtual, erect and diminished
    • (d) real and the same size
  4. 4. The SI unit of power of a lens is the:
    • (a) watt
    • (b) newton
    • (c) dioptre
    • (d) joule
  5. 5. State the two laws of reflection.
  6. 6. Define the power of a lens and give its unit.
  7. 7. An object is placed 10 cm from a convex lens of focal length 15 cm. Find the image distance and state the nature of the image.
View answers
  1. 1. (c) f = R/2 — The focal length is half the radius of curvature.
  2. 2. (a) 1/v + 1/u = 1/f — For mirrors, 1/v + 1/u = 1/f.
  3. 3. (c) virtual, erect and diminished — A convex mirror always gives a virtual, erect, diminished image.
  4. 4. (c) dioptre — Power of a lens is measured in dioptres (D).
  5. 5. The angle of incidence equals the angle of reflection, and the incident ray, reflected ray and normal lie in the same plane.
  6. 6. Power is the reciprocal of focal length in metres (P = 1/f); its unit is the dioptre (D).
  7. 7. u = −10 cm, f = +15 cm. Lens formula: 1/v = 1/f + 1/u = 1/15 + (−1/10) = 2/30 − 3/30 = −1/30, so v = −30 cm. The image is virtual, erect and magnified (on the same side as the object), as expected when the object is within the focal length.
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FAQ

Is this Class 10 Science worksheet on Light – Reflection and Refraction free?
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Does the Light – Reflection and Refraction worksheet come with answers?
Yes. Every worksheet has a separate answer key with the correct answers, short explanations and marks, so it is ready for marking.
Can I choose how many questions and which types?
Yes. Open the generator for this chapter and set how many MCQs, short, long and HOTS questions you want; totals and marks update live, and you can swap any single question.
Which board and class is this for?
This worksheet is aligned to CBSE Class 10 Science, chapter “Light – Reflection and Refraction”.