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1.
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
2.
Which of the following is a natural phenomenon which is caused by the dispersion of sunlight in the sky?
3.
The defect of vision in which the image of nearby objects is formed behind the retina, is
4.
The defect of the eye in which the eyeball becomes too long is
5.
The medical condition in which the lens of the eye of a person becomes progressively cloudy resulting in blurred vision is called
6.
What type of image is formed by the eye lens on the retina?
7.
The amount of light entering the eye can be controlled by the
8.
When white light enters a glass prism from air, the angle of deviation is maximum for
9.
When white light enters a glass prism from air, the angle of deviation is least for
10.
Twinkling of stars is due to