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Light – Reflection and Refraction — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceLight – Reflection and Refraction1 Mark
MCQ
A student has obtained a point image of a distant object using the given convex lens. To find the focal length of the lens he should measure the distance between the:
  • A
    Lens and the object only.
  • B
    Lens and the screen only.
  • C
    Object and the image only.
  • D
    Lens and the object and also between the object and the image.
✓

Answer

B. Lens and the screen only.

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