An air bubble inside a glass slab (µ=1.5) appears 6 cm when viewed from one side and 4 cm when viewed from the opposite side. The thickness of the sla

Question

An air bubble inside a glass slab (µ=1.5) appears 6 cm when viewed from one side and 4 cm when viewed from the opposite side. The thickness of the sla

An air bubble inside a glass slab (µ=1.5) appears 6 cm when viewed from one side and 4 cm when viewed from the opposite side. The thickness of the slab is
A. 10 cm
B. 6.67 cm
C. 15 cm
D. None of these

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - C
(c ) `d_(actual)=(d_(app))µ`
From one side, `d_(1)=6xx1.5=9`
From other side, `d_(2)=4xx1.5=6`
`therefore d=d_(1)+d_(2)=15 cm`

5 views Answered 2023-02-05 15:29