Read the passage carefully and answer the following questions. A beam of white light falling on a glass prism gets split into seven colours marked $1$ to $7$ as shown in figure.

Which of the following statements is correct?

Read the passage carefully and answer the following questions. A beam of white light falling on a glass prism gets split into seven colours marked $1$ to $7$ as shown in figure.

Which of the following statements is correct?

Two equilateral prisms are arranged as shown in diagram. 

Statement $1:$ If white light incident on prism $X$ then the ray of light which emerges out of the prism $Y$ will be white light.
Statement $2:$ The refraction produced by the prism $Y$ is equal and opposite to that produced by prism $X$.

Observe the given diagram carefully. What could causes of the defect?

$\left(\mathrm{i}\right)$ The focal length of the eye lens is too long.
$\left(\mathrm{ii}\right)$ The eyeball becomes too small.
$\left(\mathrm{iii}\right)$ The focal length of the eye lens is too small.
$\left(\mathrm{iv}\right)$ The eyeball becomes too long.

Figures $\left(\mathrm{i}\right), \left(\mathrm{ii}\right), \left(\mathrm{iii}\right) \& \left(\mathrm{iv}\right)$ respectively correspond to: