MHT CET 2024 Physics question
An ink mark is made on a piece of paper: A glass slab of thickness 't' is placed on it. The ink mark appears to be raised up through a distance 'x' when viewed at nearly normal incidence. If the refractive index of material of glass slab is '' then thickness of glass slab 't' is given by
Answer: (B)
Solution
Viewed normally from above, a slab of thickness and index makes the object appear at depth instead of . The apparent raising (normal shift) is . Solving for the thickness, , option (B).
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