Question

Are all animals equally sensitive to same intensity of light? Explain.

Answer 1

1. The cornea is the part of the eye that is responsible for the sensitivity toward the light rays.
2. All the animals are having a different refractive index of the cornea.
3. We know that the refractive index is given by $\mu =\frac{c}{v}$ ……$\left(1\right)$ where $c$ is the velocity of light in a vacuum and $v$ is the velocity of light.
4. We also know that velocity $v$ is given by $v=f\lambda$ ……$\left(2\right)$ where $f$ is the frequency and $\lambda$ is the wavelength
5. Substituting the value of $v$ in equation $\left(1\right)$ we get,

$\Rightarrow \mu =\frac{c}{f\lambda }$

$\Rightarrow \mu$∝$\frac{1}{\lambda }$

Hence, all animals are not equally sensitive to the same intensity of light.