An air bubble in a glass slab (R.I. = 1.5) . appears to be at 0.06 m and 0.04 m when viewed normally from the two opposite sides. The thickness, in m, of the slab is

Question

An air bubble in a glass slab (R.I. = 1.5) . appears to be at 0.06 m and 0.04 m when viewed normally from the two opposite sides. The thickness, in m, of the slab is (A) 0.10 (B) 0.15 (C) 0.20 (D) 0.05

Tardigrade Admin · Accepted Answer

Refractive index of slab, μ = 1.5 Total apparent length in the glass = 0.06 + 0.04 = 0.10 : m. Thickness of the slab, t = μ × Apparent length in the glass = 1 .5 × 0.10 = 0.15 : m.

Q. An air bubble in a glass slab (R.I. = 1.5) . appears to be at 0.06 m and 0.04 m when viewed normally from the two opposite sides. The thickness, in m, of the slab is

0.10

0.15

0.20

0.05

Refractive index of slab, $μ = 1.5$
Total apparent length in the glass
$= 0.06 + 0.04 = 0.10 m$ .
Thickness of the slab,
$t = μ \times$ Apparent length in the glass
$= 1.5 \times 0.10 = 0.15 m$ .

Q. An air bubble in a glass slab (R.I. = 1.5) . appears to be at 0.06 m and 0.04 m when viewed normally from the two opposite sides. The thickness, in m, of the slab is

0.10

0.15

0.20

0.05

Refractive index of slab, μ=1.5 Total apparent length in the glass =0.06+0.04=0.10m. Thickness of the slab, t=μ× Apparent length in the glass =1.5×0.10=0.15m.

Refractive index of slab, $μ = 1.5$
Total apparent length in the glass
$= 0.06 + 0.04 = 0.10 m$ .
Thickness of the slab,
$t = μ \times$ Apparent length in the glass
$= 1.5 \times 0.10 = 0.15 m$ .