Explain the structure and functioning of Human eye. How are we able to see nearby as well as distant objects?
Explain the structure and functioning of Human eye. How are we able to see nearby as well as distant objects?
What is the difference in colours of the Sun observed during sunrise/sunset and noon? Give explanation for each.
Is the position of a star as seen by us its true position? Justify your answer.
Draw a ray diagram showing the dispersion through a prism when a narrow beam of white light is incident on one of its refracting surfaces. Also indicate the order of the colours of the spectrum obtained.
How will you use two identical prisms so that a narrow beam of white light incident on one prism emerges out of the second prism as white light? Draw the diagram.
A person needs a lens of power –4.5 D for correction of her vision.
(a) What kind of defect in vision is she suffering from?
(b) What is the focal length of the corrective lens?
(c) What is the nature of the corrective lens?
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