Question

the refractive index of crown glass and flint glass are 1.52 and 1.65 respectively. which will allow the light to travel faster? give reason​

Answer 1

. Light will travel faster through Crown glass. Reason - Greater the refractive index, greater is the density of the medium and greater the density of the medium, lesser is the speed of light.

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Answer 2

Answer:

The crown glass will allow the light to travel faster.

Explanation:

Given:

$u_{c}=1.52\\ u_{f}=1.65$

Here,

The refractive index of the crown glass is denoted by $u_{c}$.

The refractive index of the flint glass is denoted by $u_{f}$.

The speed of light in the crown glass is denoted by $v_{c}$.

The speed of light in the flint glass is denoted by $v_{f}$.

The speed of light is denoted by c.

Now,

By the equation,

$v=\frac{c}{u}$

The lesser the denominator higher the speed.

Then,

$u_{f} > u_{c}$   ⇔   $v_{c} > v_{f}$

So, the crown glass will allow the light to travel faster.