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Doubt of ray optics .A glass slab with n=1.5 of thickness 3 cm is placed on ink spot . A person looks at it from a distance of 5 cm above the ink spot . The distance of spot will appear to be

Doubt of ray optics .A glass slab with n=1.5 of thickness 3 cm is placed on ink spot . A person  looks at it from a distance of 5 cm above the ink spot . The distance of spot will appear to be
 

Grade:12

1 Answers

Eshan
askIITians Faculty 2095 Points
3 years ago
Dear student,
Apparent depth of the ink spot when seen from above=\dfrac{3cm}{1.5}=2cm
Hence the distance of spot when seen from a height of 5cm is5cm+2cm=7cm

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