The refractive index of water is 1.33. What will be the speed of light in water?

Question

The refractive index of water is 1.33. What will be the speed of light in water? (A) 3 × 1 08 textms- 1 (B) 4 × 1 08 textms- 1 (C) 1.33 × 1 08 textms- 1 (D) 2.26 × 1 08 textms- 1

Tardigrade Admin · Accepted Answer

We know that refractive index of a medium is given by: μ = (c/ v ) ∴ v = (c/μ ) = (3 × 1 08/1 ⋅ 3 3) = 2.26 × 1 08 textms- 1

Q. The refractive index of water is 1.33. What will be the speed of light in water?

$3 \times 1 0^{8} ms^{- 1}$

$4 \times 1 0^{8} ms^{- 1}$

$1.33 \times 1 0^{8} ms^{- 1}$

$2.26 \times 1 0^{8} ms^{- 1}$

We know that refractive index of a medium is given by :
$μ = \frac{c}{v}$
$∴ v = \frac{c}{μ} = \frac{3 \times 1 0 ^{8}}{1 \cdot 33} = 2.26 \times 1 0^{8} ms^{- 1}$

Q. The refractive index of water is 1.33. What will be the speed of light in water?

3×108ms−1

4×108ms−1

1.33×108ms−1

2.26×108ms−1

We know that refractive index of a medium is given by : μ=vc​ ∴v=μc​=1⋅333×108​=2.26×108ms−1

$3 \times 1 0^{8} ms^{- 1}$

$4 \times 1 0^{8} ms^{- 1}$

$1.33 \times 1 0^{8} ms^{- 1}$

$2.26 \times 1 0^{8} ms^{- 1}$

We know that refractive index of a medium is given by :
$μ = \frac{c}{v}$
$∴ v = \frac{c}{μ} = \frac{3 \times 1 0 ^{8}}{1 \cdot 33} = 2.26 \times 1 0^{8} ms^{- 1}$