The Human Eye and the Colourful World

In Newton's two-prism experiment shown, the second inverted prism recombines the colours because:

The sun is visible about 2 minutes before actual sunrise because of:

In the mirage diagram, the inverted image is formed because:

Read the following and answer the questions: A student is using a concave lens of focal length \(2\text{ m}\) to correct his vision. He finds that he can see objects clearly up to a distance of \(2\text{ m}\) from his eye, but objects beyond this distance appear blurred. This defect of vision is called myopia or near-sightedness. What is the far point of this student's eye?

Stars appear higher than their actual position due to ________.