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Light, Shadows and Reflections — Science STD 6 — Question

CBSE BoardEnglish MediumSTD 6ScienceLight, Shadows and Reflections1 Mark
MCQ
A solid transparent sphere has a small opaque dot at its centre. When observed from outside, the apparent position of the dot will be:
  • A
    Closer to the eye than its actual position.
  • ✓
    The same as its actual position.
  • C
    Farther away from the eye than its actual position.
  • D
    None of these.
✓

Answer

Correct option: B.
The same as its actual position.

As $u = – R;$

$\therefore$ $\frac{1}{v}-\frac{u}{-R}=\frac{1-u}{(-R)}$
​​​​​​​$\Rightarrow u= – R$

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